Answer:
I Choosed:
A. They can end up as waste products that sometimes can’t be recycled.
B. They sometimes release toxins into the environment.
C. They use materials from Earth that are nonrenewable.
Explanation:
A. Synthetic polymers, such as plastic, can end up as waste in landfills, oceans, and other natural areas. This can cause a variety of environmental problems, as some types of plastic do not break down easily and can persist in the environment for decades or even centuries. This accumulation of waste can have negative impacts on wildlife, ecosystems, and human health.
B. Some synthetic polymers are made using harmful chemicals that can leach out and release toxins into the environment. These toxins can have negative impacts on wildlife, ecosystems, and human health. For example, some types of plastic contain chemicals such as bisphenol-A (BPA) that have been linked to hormone disruption and other health problems.
C. The production of synthetic polymers often requires the use of nonrenewable resources, such as petroleum and natural gas. These resources are finite and their extraction and processing can cause environmental damage, including air and water pollution and habitat destruction. The continued use of these nonrenewable resources can exacerbate environmental problems and contribute to climate change.
These are three ways that synthetic polymers can affect the environment, and it's important to consider the impacts of these materials in order to minimize their negative effects and promote sustainability.
6) based off of your understanding of atomic structure, which would have a larger radius, f or f-1? explain your answer.
F-1 would have a larger radius because it has one less electron than F, reducing the electrostatic attraction between the nucleus and electrons, making the atom larger.
The radius of an atom is determined by the distance between the nucleus and the outermost electron shell. The number of electrons in the outermost shell, or valence electrons, determines the size of the atom. In this case, F has 9 electrons in its outermost shell, while F-1 has 8 electrons. With one fewer electron, F-1 has less electrostatic attraction between the nucleus and electrons, and thus a larger radius.Valence electrons are the electrons in the outermost shell of an atom that participate in chemical reactions. The number of valence electrons an atom has determines its reactivity and how it will bond with other atoms
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Classify the outcomes based on whether they are caused by adding or removing a reactant from a chemical reaction.
The rate of the reverse
reaction increases.
The concentration of
products decreases.
The concentration of
products increases.
The rate of the forward
reaction increases.
A) adding a reactant
B) removing a reactant
PLEASE BE ACCURATE!!! Thank you very much!!:)
Answer:
The rate of the reverse reaction increases - B) removing a reactant
The concentration of products decreases - B) removing a reactant
The concentration of products increases - A) adding a reactant
The rate of the forward reaction increases - A) adding a reactant
Explanation:
In a chemical reaction, adding a reactant increases the amount of reactants in the system, which can increase the rate of the forward reaction. On the other hand, removing a reactant decreases the amount of reactants, which can increase the rate of the reverse reaction.
The increase in the rate of the reverse reaction can lead to a decrease in the concentration of the products. Meanwhile, the increase in the rate of the forward reaction can lead to an increase in the concentration of the products.
So, based on this information, we can classify the outcomes as follows:
The rate of the reverse reaction increases: B) removing a reactant
The concentration of products decreases: B) removing a reactant
The concentration of products increases: A) adding a reactant
The rate of the forward reaction increases: A) adding a reactant
ALLEN
how does a crowbar used to remove the top of a box change the direction of the force?
Which two rings have approximately the same bond angle in their favored conformations?
A. Cyclopropane
B. Cyclobutene
C. Cyclohexane
D. Cyclopentane
E. Cycloheptane
Which ring(s) sacrifice bond angle to relieve torsional strain?
A. Cyclobutene
B. Cyclopropane
C. Cycloheptane
D. Cyclopentane
E. Cyclohexane
Which strain(s) are a type of steric interaction?
A. transannular strain
B. ring strain
C. torsional strain
D. bond angle strain
The favored conformations of cyclopropane and cyclobutene have approximately the same bond angle of about 60 degrees.
Cyclopropane and cyclobutane sacrifice bond angle to relieve torsional strain.
Both torsional strain and steric strain are examples of steric interactions.
What is Cyclopropane?The cycloalkane with the chemical formula (CH2)3 is known as cyclopropane. It is made up of three methylene groups (CH2) that are joined together to create a ring.
It is an extremely strained molecule due to the high angle strain resulting from the 60-degree bond angles in the ring. It is used as a starting material in organic synthesis and as an anesthetic in medicine.
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Which choice describes climate?
Responses
The U. S. Gulf coast typically has warm, wet weather and tropical storms during the summer and fall. The U. S. Gulf coast typically has warm, wet weather and tropical storms during the summer and fall. The U. S. Gulf coast was hit by Hurricane Katrina in 2005 and suffered extensive damage. The U. S. Gulf coast was hit by Hurricane Katrina in 2005 and suffered extensive damage. In March 1971, Canada was hit by a major blizzard and up to 32 inches of snow fell. In March 1971, Canada was hit by a major blizzard and up to 32 inches of snow fell. An extremely dangerous tornado hit Jarrell, Texas in 1997 destroying 40 homes
The Gulf region, which is in the wet-dry tropics (savanna), experiences year-round temperatures of hot to very hot.
Looking at average temperatures and precipitation through time is the easiest way to characterize a climate. The amount and type of precipitation, sunshine hours, typical wind directions and speeds, the number of days above freezing, weather extremes, and the geography of the area are additional factors that can be used to describe climate. The Northwest Coastal, High Plains, Midwest, Mid-Atlantic, Southeast, South, and Southwest are the seven principal climate regions of the United States. As a result of the fact that these states have similar weather patterns throughout the year, they are included in each climate zone for the United States.
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If the chromium, Cr, contamination in water is 5ppm, how many grams of Cr are present in 1000g of pond water?
0.005 g of Cr are present in 1000 g of water.
What does "parts per million" mean?
This stands for "parts per million" and can also be written as mg/L (milligrams per liter). The mass of a chemical or contamination per volume of water is the unit of measurement here.
PPM, or parts per million, is a word used to describe a solution's concentration. In 1000 ml or 1 L of solution, 1 milligram of the solute equates to 1 ppm.
It is assumed that water contains 5 parts per million (ppm), or 5 mg of Cr per liter. 1000 ml or 1000 g is equal to one liter of water. Therefore, 5 mg or 0.005 g of Cr are present in 1000 g of water.
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Convert 25.44 g of calcium oxide to moles.
Answer:
0.4535 mols
Explanation:
CaO Molar Mass is 56.1 grams.
25.44gCaO x 1mol/56.1g = 0.4535 mols
if there is 5.0x10^-6 grams of As in 1200 grams of drinking water, what is the concentration of As in ppm?
The concentration in ppm is 5.0 ppm.
What is the ppm unit?Ppm stands for "parts per million." It is a unit of measurement that is used to express the concentration of a substance in a mixture. In ppm, the amount of a substance is expressed as the number of parts of the substance per million parts of the mixture.
It is important to note that ppm is a relatively small unit of measurement, and that concentrations in the range of thousands or even millions of ppm can still be harmful to humans and the environment.
Given that the unit microgram/ gram is the same as the ppm then we have that the concentration could be 5.0μg/g or 5.0 ppm
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a titration is performed as follows: 6.685 ml of fe2 solution of unknown concentration is charged into a 100 ml beaker 45 ml of deionized water is added the solution is titrated with 0.962 m ce4 solution the equivalence point is reached after 24.995 ml of ce4 solution is added what is the concentration of the fe2 solution? report your response to three digits after the decimal.
To determine the concentration of the Fe2+ solution, we can use the following equation for the reaction between Fe2+ and Ce4+ ions:[tex]Fe2+ + Ce4+ → Fe3+ + Ce3+[/tex]
We know the volume and molarity of the Ce4+ solution (0.962 M), and the volume of Ce4+ solution required to reach the equivalence point (24.995 mL). The volume of Ce4+ solution can be used to find the number of moles of Ce4+ ions present in the solution.
First, convert the volume of Ce4+ solution to liters:
[tex]24.995 mL * (1 L / 1000 mL) = 0.024995 L[/tex]
Next, use the molarity and volume to find the number of moles of Ce4+ ions:
[tex]0.962 M * 0.024995 L = 0.023724 moles of Ce4+[/tex]
Since the equivalence point is reached, the number of moles of Ce4+ ions added is equal to the number of moles of Fe2+ ions in the original solution. We can now use this information to find the concentration of the Fe2+ solution.
First, we need to determine the total volume of the Fe2+ solution and water mixture.
Volume of Fe2+ solution = 6.685 mL
Volume of water = 45 mL
Total volume = 6.685 mL + 45 mL = 51.685 mL = 0.051685 L
Next, use the number of moles of Fe2+ ions and the total volume to find the concentration:
[tex]0.023724 moles / 0.051685 L = 0.462 M[/tex]
So, the concentration of the Fe2+ solution is 0.462 M.
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Which solution will exhibit the greatest increase in boiling point compared to plain water?
A 0.5 M AIN
B 2.0 M K2SO4
C 2.0 M C5H1206
2.0 M K2SO4 will exhibit the greatest increase in boiling point compared to plain water.
What is boiling point?Boiling point is the temperature at which a liquid changes into a gas. It is the temperature at which the vapor pressure of the liquid is equal to the atmospheric pressure. Boiling point is an important physical property of a substance and is dependent on the pressure applied to the liquid. Generally, the higher the pressure, the higher the boiling point of a liquid. For example, water boils at 100°C (212°F) at sea level, but at higher altitudes, where atmospheric pressure is lower, water boils at lower temperatures. The boiling point of a substance is also affected by the presence of other compounds in the liquid, such as impurities. Boiling point is an important property used to identify and characterize materials, and is typically measured with a thermometer.
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What are the properties of covalent bonds and how do they differ from ionic bonds?
Answer:
Covalent bonds are formed by the sharing of electrons between two non-metallic atoms. These bonds are typically stronger and more stable than ionic bonds and are found in compounds such as water, hydrogen, and carbon dioxide. Covalent bonds differ from ionic bonds in that they do not involve the transfer of electrons from one atom to another.
Explanation:
How many moles of Ana are in 42 grams of Na
Answer:
1.83 moles
Explanation:
The question is: how many moles of "Na" are in 42 g of Na, right?
1 mole of Na = 23 g
so # mole = (1 mole / 23 g) x 42g = 1.82 moles
What volume of a 2.46 M
magnesium nitrate (Mg(NO3)2)
solution would be needed to make
275 mL of a 0.758 M solution by
dilution?
[?] mL of 2.46 M Mg(NO3)2
Converting the volumes to litres is not necessary. Any volume measurement is acceptable as long as it is utilized consistently on both sides.
What is the needed volume to make dilutions?The following formula can be used to create a specific volume of a diluted solution from a stock solution. Where: V1 = Volume of stock solution required to make the new solution, C1V1 = C2V2. C1 is the stock solution's concentration. V2 is the new solution's final volume.
However, as was already said, you need to know the volume in litres if you're trying to figure out how many moles of solute are present.
Data retrieved from the query include the following:
C1 = 2.46 M
V1 =?
C2 = 0.758 M
V2 = 275 mL = 275/1000 = 0.275L
We can definitely determine the volume of the initial solution using the dilution formula C1V1 = C2V2.
C1V1 = C2V2
2.46 x V1 = 0.758 x 0.275
Divide both side by 2.46
V1 = (0.758 x 0.275) /2.46
V1 = 0.0847L
Therefore, 0.0847L volume of a 2.46 Magnesium nitrate (Mg(NO3)2)
solution would be needed to make 275 mL of a 0.758 M solution by
dilution
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what is the number of atoms in a volume of 4.48 L of He gas STP?
a) 6.02 x 10^23
b) 3.02 x 10^23
c) 1.34 x 10^25
d) 1.20 x 10^23
Avogadro's number can be multiplied by the number of moles to determine the number of atoms in 4.48 L of He gas at STP is 1.20 x 10²³ atoms.
Option D is correct.
Evaluating :N = N × n
= 6.02 x 10²³ × 0.200 mol
= 1.20 x 10²³ atoms.
Therefore, the answer is 1.20 x 10²³ atoms.
What number does Avogadro have?
In physics and chemistry, Avogadro's number is a fundamental constant that indicates the number of atoms, ions, or molecules in one mole of a substance. It is exactly 6.02214076 x 10²³ particles per mole, as defined.
STP: What is it?Standard Temperature and Pressure is spelled STP. For the purpose of measuring the physical properties of gases, STP is utilized as a reference condition. It has a temperature of 0° Celsius and a pressure of one atmosphere.
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If ethanol, percentage composition is 45.45% of C 23.40% of H, and 31.15% of O, which of the following s the number relative moles carbon present
Answer:
3.784
Explanation:
Answer: 3.784
Explanation:
calculate the food coloring concentrations in a standard if 3 ml of .892%(v/v) stock solution was transferred to a 100ml volumetric flask and diluted to volume
We can use the following formula to determine the amount of food colouring present in a standard solution: C1V1 = C2V2. As a result, the final standard solution's food colouring concentration is 0.02676% (v/v).
A homogeneous mixture of two or more substances, in which the solute is uniformly dispersed in the solvent, is referred to as a solution. Solutions exist in a variety of forms, including gases, liquids, and solids. They are crucial in a number of disciplines, such as chemistry, medicine, and technology. To create a solution, one must correctly measure the amounts of the solute and solvent and then completely combine them to create a homogeneous mixture. A solution's concentration can be stated in a number of ways, including molarity, molality, and percent by mass or volume. Solutions can differ from their component elements and compounds in terms of their boiling and melting points, as well as their appearance, flavour, and odour.
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If 200g of CH3OH is used in a combustion process. How many grams of water can be produced?
224.7 grams of water can be produced by the combustion of 200 grams of CH3OH.
What is combustion?
Combustion is a chemical reaction that occurs between a fuel and an oxidizing agent, usually oxygen, which results in the release of energy in the form of heat and light. During combustion, the fuel is oxidized (i.e., loses electrons) and the oxidizing agent is reduced (i.e., gains electrons). This reaction is often accompanied by the production of other products, such as water and carbon dioxide.
The balanced chemical equation for the combustion of CH3OH is:
2 CH3OH + 3 O2 → 2 CO2 + 4 H2O
From the balanced equation, we can see that 2 moles of CH3OH react with 4 moles of H2O. Therefore, we can use the molar mass of CH3OH to calculate the number of moles of CH3OH, and then use the stoichiometric ratio to calculate the number of moles of H2O produced. Finally, we can convert the moles of H2O to grams using the molar mass of water.
Step 1: Calculate the number of moles of CH3OH.
molar mass of CH3OH = 12.01 g/mol (C) + 4(1.01 g/mol) (H) + 16.00 g/mol (O) = 32.04 g/mol
moles of CH3OH = mass / molar mass = 200 g / 32.04 g/mol = 6.237 mol
Step 2: Calculate the number of moles of H2O produced.
From the balanced equation, we need 4 moles of H2O for every 2 moles of CH3OH.
moles of H2O = 4 x moles of CH3OH / 2 = 4 x 6.237 mol / 2 = 12.474 mol
Step 3: Calculate the mass of H2O produced.
molar mass of H2O = 2(1.01 g/mol) + 16.00 g/mol = 18.02 g/mol
mass of H2O = moles of H2O x molar mass of H2O = 12.474 mol x 18.02 g/mol = 224.7 g
Therefore, 224.7 grams of water can be produced by the combustion of 200 grams of CH3OH.
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Imagine it's a cold winter night; you've turned the heater on to get toasty and warm. You open the door for a moment and someone yells to close it and says "you're letting the cold in!" Is this statement true or false? i need a paragraph explaining why and evidence.
The statement "you're letting the cold in" is technically false. When you open a door on a cold winter night, you are allowing the warm air inside to escape, which can cause a drop in temperature. However, you are not necessarily "letting the cold in." The cold air is already present outside, and it will continue to exist whether the door is open or closed. In fact, the temperature inside your home may only change slightly, and it will depend on many factors such as the size of the room, the amount of insulation, and the efficiency of the heating system.
The concept of heat transfer, which is the movement of heat from one place to another, helps explain why this statement is false. When you open the door, the warm air inside will move to the cold air outside, which is known as conduction. This transfer of heat will cause the temperature inside to drop until the heat source can warm up the air again. This process will continue as long as the door remains open. So, while opening the door on a cold winter night can cause a drop in temperature, it is not because you are "letting the cold in." Instead, it is because you are allowing the warm air inside to escape.
The crystallization step of recrystallization removes which category of impurities?
The crystallization step of recrystallization removes soluble impurities from a solid mixture. When a solid is dissolved in a solvent and then allowed to cool, the solubility of the solid in the solvent decreases and the solid crystallizes out of the solution.
Soluble impurities, which are typically more soluble in the solvent than the desired compound, will remain in solution or be incorporated into the crystal lattice of the impure crystals. As a result, the crystals that form during the crystallization step will have a higher purity than the initial solid mixture. Further purification can be achieved through multiple rounds of recrystallization using different solvents or by additional purification methods such as chromatography.
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what does she mean by this?
This means that the balance equation for the reaction of NH₄Cl (ammonium chloride) producing NH3 (ammonia) and HCl (hydrochloric acid) is: NH₄Cl (s) → NH₃ (g) + HCl (g).
How to write a balanced equation?A balanced chemical equation is a representation of a chemical reaction that shows the same number of atoms of each element on both the reactant and product sides of the equation. To balance a chemical equation, the following steps can be followed:
Write the unbalanced equation, including the correct formulas for the reactants and products.Determine the number of atoms of each element on the reactant and product sides.If necessary, adjust the coefficients of the reactants and products to make the number of atoms of each element equal on both sides.Check the equation to make sure that it is balanced and that the coefficients are the smallest whole numbers possible.Learn more on balanced equations here: https://brainly.com/question/11904811
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The balanced equation for the reaction is:
NH₄Cl(s) -> NH₃(g) + HCl(g)
How do I balance the chemical equation?The law of conservation of matter which states that matter can neither be created nor destroyed during a chemical reaction but can be transferred from one form to another.
We can balance chemical equation by obeying the above law.
Now, we shall write the balance equation.
Ammonium chloride => NH₄ClAmmonia => NH₃Hydrogen chloride => HClAmmonium chloride -> Ammonia + Hydrogen chloride
NH₄Cl(s) -> NH₃(g) + HCl(g)
Reactant:
N = 1H = 4Cl = 1Product:
N = 1H = 3 + 1 = 4Cl = 1We can see that the atoms of the elements on both sides of the equation are equal, then the equation is balanced
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suppose we have two identical boxes of matter, a and b, that are in thermal contact but cannot exchange materials. they come to thermal equilibrium. system 1 consists of box a alone, while system 2 consists of both boxes a and b. what can you say about the entropy of the two systems?
The entropy of system 1, consisting of box A alone, will remain constant, while the entropy of system 2, consisting of both boxes A and B, will be greater due to the increase in the number of available microstates.
When two identical boxes of matter, A and B, are in thermal contact but cannot exchange materials, they will eventually come to thermal equilibrium. At thermal equilibrium, the two boxes will have the same temperature, and their individual entropies will be equal.
If we consider system 1, which consists of box A alone, its entropy will remain constant as it is an isolated system. However, if we consider system 2, which consists of both boxes A and B, the total entropy of the system will increase because there are now more ways for energy to be distributed between the two boxes. In other words, the addition of box B provides more microstates or configurations for the system to occupy, and hence the entropy of the combined system will be greater than that of system 1.
Therefore, we can say that the entropy of system 2, consisting of both boxes A and B, will be greater than the entropy of system 1, consisting of box A alone, as a result of the greater number of available microstates in system 2. This increase in entropy is a manifestation of the second law of thermodynamics, which states that the entropy of an isolated system will always tend to increase over time.
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Why would you want to know how much carbon dioxide your dream car produces?
Answer:
You might want to know the amount of carbon dioxide produced by your dream car for a variety of reasons. For example:
Environmental impact: Knowing the carbon dioxide emissions of a car can give you an idea of its impact on the environment. High carbon dioxide emissions contribute to climate change, air pollution, and other environmental issues.
Fuel efficiency: A car that produces high levels of carbon dioxide is likely to be less fuel efficient. This means that it may consume more fuel than other vehicles, making it more expensive to operate over time.
Government regulations: Many countries have regulations that limit the amount of carbon dioxide that cars can emit. Knowing the emissions of your dream car can help you determine whether it is compliant with these regulations.
Personal responsibility: If you are concerned about the impact of your actions on the environment, knowing the carbon dioxide emissions of your dream car can help you make informed decisions about the car you purchase and how you use it.
Explanation:
Overall, knowing the carbon dioxide emissions of your dream car can help you make informed decisions about your driving habits and the car you purchase.
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What is a statement using chemical formulas to describe the identities and relative amounts of the reactants and products involved?
The coefficients in front of the chemical formulas indicate the relative amounts of the reactants and products, and the subscripts within the chemical formulas indicate the ratios of atoms of each element present.
A chemical equation is a statement using chemical formulas to describe the identities and relative amounts of the reactants and products involved in a reaction. A chemical equation typically consists of the chemical formulas of the reactants (the substances being reacted), separated by an arrow, followed by the chemical formulas of the products (the substances produced by the reaction).
For example, the balanced chemical equation for the reaction between hydrogen gas (H2) and oxygen gas (O2) to form water (H2O) is:
2H2 + O2 → 2H2O
This equation indicates that two molecules of hydrogen react with one molecule of oxygen to form two molecules of water. The coefficients in front of the chemical formulas indicate the relative amounts of the reactants and products, and the subscripts within the chemical formulas indicate the ratios of atoms of each element present.
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which of the following conditions does not contribute to greater gas ideality? group of answer choices lower system temperatures larger system volumes smaller gas molecule sizes smaller system pressures
Smaller gas molecule sizes do not contribute to greater gas ideality. On the other hand, larger system volumes and smaller system pressures both contribute to greater gas ideality
The ideal gas law assumes that gas molecules are point masses with no volume and that there are no attractive or repulsive forces between the molecules. In reality, gas molecules do have volume, and there are intermolecular forces that can affect the behavior of the gas. However, if the gas molecules are small compared to the volume of the container they are in, their volume becomes relatively insignificant and can be ignored. Therefore, smaller gas molecule sizes do not contribute to greater gas ideality, as their small size makes them approach the ideal gas behavior more closely. Smaller gas molecule sizes do not contribute to greater gas ideality.
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Balance the Equation to Solve. How many grams of Hydrogen (H2) are needed to completely react with 3 moles of Nitrogen (N2)
The molar mass of hydrogen (H2) is 2.016 g/mol. Therefore, the mass of 9 moles of hydrogen is: 9 mol x 2.016 g/mol = 18.144 g. So, 18.144 grams of hydrogen must react with 3 moles of nitrogen completely.
How is ammonia useful?Ammonia is useful in many ways, including fertilizer production, household cleaning product, refrigeration, water treatment, textile production and fuel production.
Why is ammonia a key component of fertilizer?Ammonia is a key component of fertilizer because it contains nitrogen, an essential nutrient for plant growth. Plants require nitrogen to build proteins and other essential molecules. While nitrogen is abundant in the atmosphere, plants cannot use it in its gaseous form. Instead, nitrogen must be converted into a usable form, such as ammonia, through a process called nitrogen fixation.
The balanced chemical equation for the reaction between nitrogen and hydrogen to form ammonia is N2 + 3H2 → 2NH3.
To react completely with 3 moles of nitrogen,
3 moles N2 x 3 moles H2 / 1 mole N2 = 9 moles H2
The molar mass of hydrogen (H2) is 2.016 g/mol. Therefore, the mass of 9 moles of hydrogen is: 9 mol x 2.016 g/mol = 18.144 g
So, 18.144 grams of hydrogen must react with 3 moles of nitrogen completely.
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Fireing the thrusters would have caused the pod to kove in the oppsite direction if
Force applied by the thrusters forced the pod to reverse course, this is determined by direction and strength of the force applied.
What is thrust?Thrust is a response force that can be quantified using Newton's third law. When a system expels and accelerates mass inside one direction, the accelerating mass causes the system to experience a force of same magnitude but opposite direction.
We were told because firing the thrusters slowed but did not halt the pod. If the pod collided with the space station, it would bounce and go in the other direction.
The most likely scenario as well as reason that this has occur is that the force applied by the thrusters forced the pod to reverse course. However, this is primarily determined by two factors: the direction and strength of something like the force applied.
Therefore, force applied by the thrusters forced the pod to reverse course, this is determined by direction and strength of the force applied.
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do you use the bulb to help dispense the liquid from the pipette? why or why not?
No, the bulb is not used to help dispense the liquid from the pipette.
The bulb is used to create a vacuum which is used to draw liquid into the pipette. The liquid is then dispensed by releasing the vacuum, allowing the pressure of the liquid to push it out through the tip of the pipette. The equation for this is PV = nRT, where P is the pressure, V is the volume, n is the amount of substance, R is the universal gas constant, and T is the temperature.A pipette is a laboratory tool used to measure and transfer accurate volumes of liquid. It is composed of a long, thin tube that is connected to a bulbous reservoir at one end.
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how many protons and electrons are in the ion gold(iii)? express your answers numerically separated by a comma.
In an atom, number of electrons and protons is same and thus number of electrons and protons are 79 in an ion of gold(III).
What is an atom?An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.
The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.
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where can oxygen that has been ionized up to 5 times be typically found? question 2 options: h-ii regions ultra-hot interstellar gas clouds neutral hydrogen clouds emission clouds molecular clouds
In Ultra-hot Interstellar gas clouds can oxygen that has been ionized up to 5 times be typically found.
Ultra Hot Interstellar Gas Clouds:
Although the 10,000 K temperature of the H II region may seem warm, it is not the hottest phase of the interstellar medium. Some of the interstellar gas is a million degrees hot, even though there are no nearby visible sources of heat.
The discovery of this super-hot interstellar gas came as a great surprise. Before launching observatories into space that could see ultraviolet and X-ray radiation, astronomers assumed that most of the interstellar regions were filled with hydrogen at temperatures not higher than those found in the H II region. However, telescopes launched above Earth's atmosphere captured an ultraviolet spectrum that included interstellar lines formed by five times ionized oxygen atoms. It takes a lot of energy to knock 5 electrons off their orbits around the oxygen nucleus.
Astronomers estimate that a supernova explodes somewhere in the galaxy about every 100 years. On average, supernova impacts pass through some point in the galaxy once every few million years. These thrusts support some interstellar space filled with gas at temperatures of millions of degrees and constantly disturb the cooler gas to maintain constant turbulent motion.
Complete Question:
Where can oxygen that has been ionized up to 5 times be typically found?
a. Ultra-hot Interstellar gas clouds
b. Molecular clouds
c. H-II regions
d. Neutral hydrogen clouds
e. Emission clouds
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The graph above shows the dramatic decline in monarch butterfly populations since 1995. The population of this butterfly has dropped nearly 90% in a 20 year span. All of the explantations below are true of the monarch butterfly population. Which explanation is NOT due to resource availability?
Responses
A Nectar plants that monarch butterflies feed on during their migration have dwindling populations die to interspecies competition and weather related issues.
B Pesticide use has drastically declined the population of the milkweed plant, the monarch caterpillar's only food source.
C Increased numbers of assasian bugs which prey upon monarch caterpillars have been discovered.
D Loss of habitat and breeding grounds of the monarch butterfly due to development.
Loss of habitat and breeding grounds of the monarch butterfly due to development is the option that is not due to resource availability.
What is interspecies competition ?Interspecies competition refers to a form of competition between different species that are competing for the same limited resources such as food, water, shelter or other necessities required for their survival and reproduction. This competition can occur among individuals of the same species (intraspecific competition) or different species (interspecific competition). In the context of ecology, interspecies competition can be an important factor influencing the distribution and abundance of species in an ecosystem.
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