The premise behind this problem is that if the thermal decomposition also yields 34.5 g of sodium, you must utilise the stated mass ratio to calculate how much fluoride will be produced.
What the body does with sodium?
Sodium is a vital component that the body needs in very tiny amounts to keep bodily fluids in balance, keep nerves and muscles functioning properly, and to prevent excessive perspiration. The majority of Americans consume too much of it, and they might not even be aware of it.
What are sodium's five uses?
5Uses. Titanium, sodamide, sodium cyanide, sodium peroxide, & sodium hydride are all made from sodium. Nuclear reactors have used liquid sodium as a coolant in the past. Streetlights use sodium vapour, which emits a dazzling yellow light.
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fill in the blank. After a recrystallization, a pure substance will ideally appear as a network of ___________. If this is not the case, it may be worthwhile to reheat the flask and allow the contents to cool more __________
A pure substance should ideally show up as a network of big crystals after recrystallization. If not, it might be beneficial to reheat the flask and let the contents cool more gradually.
Recrystallization is the process through which crystal structure's grain grains adopt a new structure or new crystal form. Recrystallization is a process that is difficult to define precisely because it is closely related to a number of other processes, most notably recovery and grain growth. As soon as boiling is observed during recrystallization, solvent should be added to the mixture. More solvent should be added as soon as boiling starts up again. The solution is homogenized by repeating this process.
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explain how the addition of oxygen and calcium oxide removes silicon
Which of the following has the same number of significant figures as the number 1.00310? Select one: A. 8.66 B. 1 × 106 C. 199.791 D. 5.119 E. 100
Option B of the following has the same number of significant figures as the number 1.00310
The number 1.00310 has five significant figures. A significant figure is any digit that can be known with certainty, and it includes all digits except leading zeroes in a number. Out of the options, B. 1×106 also has five significant figures. This is because a number written in scientific notation is considered to have as many significant figures as the coefficient has. The coefficient 1 has 1 significant figure and it is the same as the number 1.00310 which has five significant figures.The other options:
A. 8.66 has three significant figures
C. 199.791 has five significant figures
D. 5.119 has four significant figures
E. 100 has three significant figures.
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Activity 2: Identifying words using context clues Directions: With the help of the hints under each number, rearrange the jumbled etters to produce the correct word
1. It is beyond human control, causing devastation to the environment, animals, and humans, and occasionally resulting in death
PENHOMENNO
2. It is the result of heavy rain caused by typhoon mostly happened during rainy session
DOFOL
3. Disturbances are spread from one location to another in a predictable and well organized manner. It is really love by the suffers by it hates by the fisherman
VE WAS
plss help me at the science
Phenomenon: This is a natural event that occurs in the atmosphere and is beyond human control, causing devastation to the environment, animals, and humans, and occasionally resulting in death.
What is Phenomenon?Phenomenon is an observable occurrence which is not fully explained by any accepted scientific theory. It is usually seen as an unexpected or unusual event that has no apparent explanation. Phenomenon can range from the unusual and unexplained, to the commonplace and expected.
Flood: This is a result of heavy rain caused by typhoon mostly happened during rainy session.
Wave: Disturbances are spread from one location to another in a predictable and well organized manner. It is really loved by the suffers by it hates by the fishermen.
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To answer this question, you have to do some research or read the relevant chapter in the textbook. The mole concept is related to everyday chemistry. For this exercise, you are going to calculate the number of molecules or atoms. Identify one food item, find out what elements or compounds are in this item. Explain how you would calculate the number of molecules or atoms of your interest. Respond others having a difficult time with calculation.
We may determine the amount of atoms or molecules contained in every food item using the mole concept and avogadro's law. Number of molecules or atoms: 0.668 x 1023
What kind of molecules are there?The smallest unit of any substance that is made up of one or more elements and has the ability to live on its own while keeping all of the substance's physical and chemical properties is called a molecule. Within molecules, more atom division takes place. For instance, the atom and molecule of oxygen are represented by the letters O and O2, respectively.
How do molecules differ from atoms?Single, neutral particles make up an atom. As neutral objects consisting of two or more atoms joined together, molecules are. A positively or negatively charged particle is called an ion.
Molar mass = [(12 X 6) + (1 X 12) + (6 X16)] g/mol
= 72 + 12 + 96 = 180 g/mol
Thus molar mass of glucose (C6H12O6) = 180 g/mol
Number of mole = 20/180 = 0.111 moles
So, 0.111 moles of glucose will contain ( 0.111 X 6.023 X 1023) number of molecules or atoms
= 0.668 X 1023 number of molecules or atoms
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5.0 moles of solid sodium chloride (nacl) are used to prepare a 5.0 m nacl solution. what is the volume of the solution
Making a 5 M solution Put 292 g of NaCl in 800 mL of water to dissolve it. H2O is used to adjust the volume to 1 L. dispense into aliquots, then autoclave to sanitize. The NaCl solution should be kept at room temperature.
To make a 5% saline solution, how many grams of NaCl are required?
Answer and justification NaCl is the solute and water is the solvent in a saline solution. In order to create 1 L of a 5% (w/v) saline solution, 50 g of NaCl are required.
How is a 5 mm solution made?
Thus, 1 liter of 5 mM NaCl is equal to 5 ml of 1 mM NaCl plus 995 ml of water. You won't need to be concerned about things like moles if you use this method. You merely need to know how to.
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Answer:
1.0 L
Explanation:
naming ionic compounds what are the structural units that make up ionic compounds and how are they named?
The naming ionic compounds the structural units that make up ionic compounds are cations as positively charged specie and the anions , negatively charged species.
The the structural units that make up ionic compounds are cations as positively charged specie and the anions , negatively charged species. There are some rules given below :
1) The name of the cation is by the name of the anion.
2) If cation has fixed charge then the name is same as element.
3) For naming the anion the name of the element is used with the suffix ide.
The some examples are :
CaO = calcium oxide
AlN = aluminum nitride
Fe²⁺ = ferrous
Fe³⁺ = ferric
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how do the two main classifications of matter differ
Matter can be broken down into two categories: pure substances and mixtures.
We are surrounded by matter, which is anything that takes up space and has mass. As matter, solids and liquids are more visible. The three states of matter most frequently encountered on earth are solids, liquids, and gases. A solid has a distinct shape and is unyielding. A liquid flows and conforms to a container, but when gravity acts on it, it creates a flat or slightly curved upper surface. A gas adopts the volume and shape of its container.
Elements and compounds are formed through the further division of pure substances. Physically coupled structures known as mixtures can be disassembled into their component parts.
A pure material is something that exclusively comprises one type of matter, according to the definition. Any sample of this substance that you examine must have exactly the same item, with a fixed, specific set of qualities. This might either be one single element or one single compound. Because there is no atom-to-atom connection between the atoms of the constituent substances in a mixture, mixtures may always be split back into their individual pure components.
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A certain line in the Balmer emission series of this cation has a wavelength of 27.15 nm. Determine the principal quantum number of the original level of the electron. Which line is it
The principal quantum number of the original number is 4 and original level of electron is 2.
The Balmer series refers to to a series of spectral emission lines of the hydrogen atom that occurs when an electron moves from higher energy levels to the energy level of n= 2.
Hence;
λ = 486.3 * 10^-9 m
RH = 1.097 * 10^7 m-1
nf = 2
ni = ?
Using the formula;
1/λ = RH (1/nf^2 - 1/ni^2)
1/486.3 * 10^-9 = 1.097 * 10^7 (1/4 - 1/ni^2)
2.06 * 10^6/1.097 * 10^7 = (1/4 - 1/ni^2)
0.188 = 1/4 - 1/ni^2
1/ni^2 = 1/4 - 0.188
1/ni^2 = 0.25 - 0.188
1/ni^2 = 0.062
ni^2 = 16
ni = 4
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suppose you were teaching a science class to middle school students. because you want to show them an impressive chemical reaction, you decide to dissolve zinc in hydrochloric acid. you add more acid than usual and throw in pieces of zinc. what factor is not going to impact the reaction rate?
You toss in some zinc and add additional acid than usual. The volume of hydrochloric acid used won't affect the rate of the reaction.
Describe acid.a substance that reacts with certain metals to produce salts and releases hydrogen into water. Acids give certain dyes a reddish tint and have a sour flavor. Gastric acid is one of the body's natural acids, and it can aid in the proper function of organs. Hydrogen peroxide is a kind of acid.
What three sorts of acids are there?Organic molecules, fatty acid metabolism, sodium ascorbate, and hydrochloric seem to be the acids that are most crucial to a female organism. The first is called binary acid, followed by oxyacid and carboxylic acid. Binary acids are represented by the letter "H-A," which stands for an ester linkages to a non - metals atom.
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A gallon of water has a mass of 37.85 hectograms. What is the mass in grams?
A gallon of water has a mass of 37.85 hectograms, which is equal to 3785 grams.
the density of a gas is 1.42g/l at temperature 23 c and a pressure of 0.788 atm. calculate the molar mass of the gas
At a temperature of 23 °C and a pressure of 0.788 atm, a gas has a density of 1.42 g/l and a molar mass of 44.04 g/mol.
What in chemistry is a molar mass?The mass in grams of one mole of a substance is its molar mass. The molar mass of a substance can be found by adding the molar masses of its constituent atoms, as demonstrated in this video. The computed molar mass can then be used to convert between mass and the quantity of moles in the substance.
What is Molar mass is it in g or U?The mass of 6.022 10 23 atoms, molecules, or formula units make up one mole of a substance, which is known as the molar mass. This value is given in grams per mole.
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when 0.501 g of sucrose (table sugar, white microcrystalline solid) is dissolved in water (clear colorless liquid) to create a solution in a 10 ml volumetric flask, a clear colorless solution is created. what in statement above is quantitative data? 0.501 g sucrose qualitative data? [ select ] how many significant figures are present in the mass? [ select ] how many significant figures are present in the volume? 1 what do the number of significant figures indicate about the measurement? the measurement's precision.
colorless liquid, clear solution, microcrystalline solid, white solid in statement above is quantitative data. The mass and volume both include significant numbers of 3 and 2, respectively.
What is a pure colorless liquid?A tasteless and colorless liquid, pure water has neither. We can conclude that the provided liquid is pure water if it boils at 100 °C (373 K) and freezes at 0 °C (273 K) both at 1 atmosphere pressure.
Which substance is colorless?Water, often called as the universal solvent, is a flavorless and odorless chemical that is necessary for all known forms of life. Small concentrations are colorless to the unaided eye. On Earth, it covers around 70% of the surface.
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Refer to the figure. Suppose hydrogen is covalently bonded to each of the other five atoms shown. In achieving stable molecular configurations, which of these five atoms will bond with the fewest number of hydrogen atoms, and which will bond with the most?
Both oxygen and sulfur will bond with the fewest number of hydrogen atoms (2); carbon will bond with the most (4).
The molecular configuration of a molecule is the permanent geometry that results from the spatial arrangement of its bonds.
The number of hydrogen required to attain the stable molecular configuration would result in 8 electrons in the outer p shell as carbon, nitrogen, oxygen sulfur,
The stability of atoms depends on whether or not their outer-most shell is filled with electrons. If the outer shell is filled, the atom is stable.
Atoms with unfilled outer shells are unstable, and will usually form chemical bonds with other atoms to achieve stability.
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To isolate a single variable when rearranging equations, move all other variables to the other side of the equation by using the opposite function on them and remembering to perform that operation on both sides of the equation.
Isolating variables are commonly used when solving equations related to chemical reactions or thermodynamics.
For example, let's say we have the equation for the equilibrium constant of a reaction:
Kc = [C][D] / [A][B]
Where Kc is the equilibrium constant, [C] and [D] are the concentrations of products C and D, and [A] and [B] are the concentrations of reactants A and B.
If we want to isolate the concentration of one of the reactants, say [A], we can use the opposite operation to move it to one side of the equation.
For example, we can multiply both sides of the equation by the denominator, [A][B], to cancel out the denominator on the right side:
Kc * [A][B] = [C][D]
Then we can divide both sides by [C][D]:
[A] = Kc * [B] / [D]
Now [A] is isolated on one side of the equation and can be calculated.
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how does an increase in temperature(kinetic energy) affect a substance in terms of shape and volume? complete the statement address all parts of the question. as the temperature of a substance increases... question 1 options: shape becomes indefinite and volume increases shape becomes more definite and volume increases shape becomes indefinite and volume decreases shape becomes more definite and volume decreases
Although the kinetic energy average rises with temperature, there won't be many overt changes in volume or form.
Which energy do you understand by kinetic?
Describe kinetic energy. A particle or an item that is in motion has a sort of energy called kinetic energy. An item accumulates kinetic energy when work, which involves the transfer of energy, is performed on it by exerting a net force.
The kinetic energy is absent?
An item in motion has energy, which is called kinetic energy. Kinetic energy can be found in the motion of molecules in space, you walking down a street, and the earth rotating around the sun. The relationship between kinetic energy and an object's mass and square of its speed is direct: K.E. = 1/2 m v2.
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1. Which liquid is more us cous: evaporated milk or condensed milk? Explain your answer based on your observation.
2. To which of type of magma can you liken the evaporated milk or condensed milk? Explain your answer
Answer correctly please...
Condensed milk is more viscous than evaporated milk. This is because condensed milk has had the majority of its water content removed through evaporation, leaving a thicker, sweeter substance.
It is not appropriate to liken evaporated milk or condensed milk to a type of magma as Magma is molten rock that can be found under the Earth's surface while evaporated milk and condensed milk are dairy products. They do not have any relation with magma.
What is a molten rock?A molten rock, also known as magma when it is underground and lava when it erupts and flows on the surface, is a mixture of liquid rock, dissolved gases, and solid mineral crystals. It is formed deep within the Earth's crust and can be composed of a variety of elements such as silicon, oxygen, aluminum, and iron.
When it is erupted, the pressure and temperature decrease, causing the dissolved gases to escape and the solid mineral crystals to form, creating the solid rock we see on the surface.
Therefore, the correct answer is as given above
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which statement best describes the entropy that occurs when two gases are added to a similar container?
A statement best describes the entropy that occurs when two gases are added to the same container: The gases will disperse and mix due to the increase in entropy for both gases.
About entropyEntropy is a thermodynamic quantity which measures the energy in a system per unit temperature that cannot be used to do work. Perhaps the most common manifestation of entropy is (following the law of thermodynamics), the entropy of a closed system always increases and under conditions of heat transfer, heat energy moves from the component with a higher temperature to the component with a lower temperature. In a system where the heat is isolated, the entropy only goes in one direction (not a reversible process). It is necessary to measure the entropy of a system to determine that energy cannot be used to do work on thermodynamic processes.
These processes can only be carried out by energy that has been transformed, and when energy is converted into work, it theoretically has a certain maximum efficiency. During the work/effort, entropy will accumulate in the system, which then is dissipated in the form of wasted heat.
In classical thermodynamics, the concept of entropy is defined in the second law of thermodynamics, which states that the entropy of an isolated system always increases or remains constant. Thus, entropy can also be a measure of the tendency of a process, whether the process tends to be "entropy" or will proceed in a certain direction. Entropy also shows that heat energy always flows spontaneously from an area with a higher temperature to an area with a lower temperature.
Thermodynamic entropy has the dimensional energy divided temperature, which has International Units joules per kelvin (J/K).
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Part A: Determine [OH−] of a solution that is 0.300 M in HCO3−. (Ka1 for H2CO3 is 4.3×10^−7.) Express your answer in molarity to two significant figures.
Part B: Determine the pH of this solution.
[ OH−] of a solution that is 0.300 M in HCO3− is 3.24×10^-8 Molarity. and the oh of the solution is 7 .49
Part A: We know that HCO3- is a weak base, so it can be converted to H2CO3 (carbonic acid) through the following equilibrium:
HCO3- + H2O <=> H2CO3 + OH-
The Ka1 for H2CO3 is 4.3×10^-7, so we can use the following expression to find the [OH-]:
[H2CO3][OH-] = Ka1 * [HCO3-]
[OH-] = Ka1 * [HCO3-] / [H2CO3]
Since [H2CO3] is equal to [HCO3-], we can simplify this to: [OH-] = Ka1 * [HCO3-]^2
[OH-] = (4.3×10^-7) * (0.300)^2[OH-] = Ka1 * [HCO3-]^2 [OH-] = (4.3×10^-7) * (0.300)^2
[OH-] = 3.24×10^-8 M. So the [OH-] of the solution is 3.24×10^-8 Molarity.
Part B: To find the pH of the solution, we need to find the negative log of the [OH-].
pH = -log([OH-])
pH = -log(3.24×10^-8)
pH = 7.49
So the pH of the solution is 7.49.
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what factors govern the position of an ir absorption peak? effect of a magnetic field on nucleus spin masses of the atoms involved in the bond the type of vibration being observed strength of the bond
The factors that govern the position of an IR peak are: strength of the bond ; masses of the atoms involved in the bond and type of vibration being observed.
What do you understand by term Infrared radiation?The study of chemicals makes use of infrared spectroscopy.
The electromagnetic spectrum includes infrared radiation. It has a significant role to play in compound analysis. Infrared spectroscopy is frequently used in organic chemistry to pinpoint a molecule's interactions.
An IR peak's location is affected by a number of variables, including:
the bond's strength, the atoms' weights, and the type of vibrations being noticed
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50 Points
What mass of H2O is produced by the combustion of 2.00 mol of CH4?
50 Points And will award brainiest if correct
CH4 + 2O2 → CO2 + 2H2O
36.01 g
42.63 g
18.02 g
6.00 g
Answer:The moles of carbon dioxide produced from 100 g methane is 6 moles.
Explanation: Balanced Equation. CH4+2O2 → CO2+2H2O.
The combustion of 2.00 mol of [tex]CH_4[/tex] produces approximately 72.08 grams of [tex]H_2O.[/tex] All the options given are incorrect.
Combustion is a chemical reaction that occurs between a fuel and an oxidizing agent basically in presence of oxygen, typically producing heat and light.
To determine the mass of [tex]H_2O[/tex] produced by the combustion of 2.00 mol of [tex]CH_4[/tex], we need to use the stoichiometric ratio between [tex]CH_4[/tex]and [tex]H_2O[/tex] in the balanced chemical equation.
From the balanced equation: [tex]CH_4 + 2O_2 \rightarrow CO_2 + 2H_2O[/tex]
We can see that for every 1 mole of [tex]CH_4[/tex], 2 moles of [tex]H_2O[/tex]are produced. We can see that for every 1 mole of [tex]CH_4[/tex], 2 moles of [tex]H_2O[/tex]are produced.
Given that we have 2.00 mol of [tex]CH_4[/tex], we can calculate the moles of [tex]H_2O[/tex]produced:
2.00 mol [tex]CH_4[/tex] × (2 mol [tex]H_2O[/tex]/ 1 mol [tex]CH_4[/tex]) = 4.00 mol [tex]H_2O[/tex]
Now, we can calculate the mass of [tex]H_2O[/tex]produced using the molar mass of water ([tex]H_2O[/tex]), which is approximately 18.02 g/mol:
Mass of [tex]H_2O[/tex] = Number of moles of [tex]H_2O[/tex]× Molar mass of [tex]H_2O[/tex]
Mass of [tex]H_2O[/tex] = 4.00 mol × 18.02 g/mol = 72.08 g
Therefore, the mass of [tex]H_2O[/tex] produced by the combustion of 2.00 mol of [tex]CH_4[/tex] is approximately 72.08 grams.
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Calculate the volume in milliliters of a M iron(II) bromide solution that contains of iron(II) bromide .
The volume of Iron (II) bromide solution is 2.13 x [tex]10^{2}[/tex] ml.
What is a Milliliter?A milliliter is a smaller metric unit that represents the volume or the capacity of a liquid. It is used to measure a smaller quantity of liquid and is equal to a thousandth of a liter. It is denoted with an abbreviation ml or mL.
Liters and milliliters are metric units of volume which are used to measure the capacity of a liquid. The capacity of a liquid can be measured in milliliters, centiliters, liters and kiloliters. Though all these units represent the same quantity, their values differ. In this page, we will find the relation between liters and milliliters and the conversion between these units.
Volume is a three-dimensional quantity that is used to measure the capacity of a solid shape. It means the amount of three-dimensional space a closed figure can occupy is measured by its volume.
Determination of volume:Given,
Concentration of iron(II) bromide = 1.29 mo/L
Moles of iron(II) bromide = 275 mmol = 0.275 mol
conversion used : 1 mmol = 0.001 mol
Volume of iron (II) bromide = Concentration of iron (II) bromide
Volume of iron (II) bromide = 0.275/1.29 = 2.13 L = 2.13 x 10² ml
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Using some of the following reagents, describe the preparation of 500 ml, ph 7 citric acid
1.8 m citric acid
1.2 m sodium dihydrogen citrate
1.5 m sodium hydrogen citrate
0.8 m sodium citrate
0.1 m hcl
0.1 m naoh
citric acid: ka1=7.4 x 10-4, ka2=1.7 x 10-5, ka3=4.0 x 10-7
Citric acid with a pH of 7 can be prepared from the following reagents.
The preparation of 500 ml of pH 7 citric acid requires a combination of the following reagents: 1.8 m citric acid, 1.2 m sodium dihydrogen citrate, 1.5 m sodium hydrogen citrate, 0.8 m sodium citrate, 0.1 m HCl, and 0.1 m NaOH.
Begin by dissolving the citric acid in 500 ml of distilled water. Gradually add the sodium dihydrogen citrate and sodium hydrogen citrate, stirring continuously until the solution is homogenous.
Then, add the sodium citrate while stirring until the solution is homogenous. Finally, adjust the pH to 7 using 0.1 m HCl and 0.1 m NaOH while stirring until the desired pH is achieved.
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what is the total contribution of the three si atoms to the sum of oxidation numbers in k-feldspars?
The sum of oxidation numbers of the three Si atoms in k-feldspars (KAlSi3O8) is +12
What is an oxidation number?The amount of electrons any atom or ion however has gained or lost in comparison to a neutral atom is known as the oxidation number / state of the atom or ion.
k-feldspars, molecular formulae KAlSi3O8
We know that -
Oxidation state of oxygen = -2
Oxidation state of Potassium = +1
Oxidation state of aluminum = +3
8 oxygens, each of them -2, = -16
1 potassium, +1
1 aluminum, +3
1 + 3 - 16 = -12
So the three silicon atoms need to make up +12 for the compound to be neutral.
12 / 3 = +4, so each silicon is +4.
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in a chemical equation, the formula of a substance in water solution is followed by the symbol.T/F
In a chemical equation, the formula of a substance in water solution is followed by the symbol. This statement is true.
In a chemical equation, what does the symbol represent?The subscript (aq) following a molecule in a chemical equation indicates that it is aqueous. Aqueous solutions are those in which the solvent is water. Chemical reactions may be represented quickly using symbol equations. They demonstrate which atoms are involved and how they are linked together. Symbol equations are always in the form of reactants products. A + symbol denotes the separation of two or more reactants or products.
A response arrow simply indicates that something has changed and that one item has become another. The arrow leads from the old object (what responded) to the new thing (the thing that formed). An “equation of reaction” employs the reaction arrow.
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A gas with a volume of 4.00l at a pressure of 205 kpa is allowed to expand to a volume of 12.0l. what is the pressure of the container if the temperature remains constant?
A gas with a volume of 4.00l at a pressure of 205 kpa is allowed to expand to a volume of 12.0 l. The pressure of the container is 68.3 kpa.
The Boyles law is given as :
P1 V1 = P2 V2
The Pressure P1 = 205 kpa
The Volume V1 = 4 L
The Pressure P2 = ?
The Volume V2 = 12 L
By using the above formula , we get
P1 V1 = P2 V2
205 × 4 = P2 × 12
P2 = 820 / 12
P2 = 68.3 kpa.
Thus, the pressure of the container is 68.3 kpa.
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Step 1:H2(g)+ICl(g)→HI(g)+HCl(g)(slow) Step 2:HI(g)+ICl(g)→HCl(g)+I2(g)(fast)Which of the following represents the overall chemical equation for the reaction and the rate law for elementary step 2 ?
H2(g)+2ICl(g) → 2HCl(g)+I2(g)H2(g)+2ICl(g)→2HCl(g)+I2(g). The most likely explanation for the disparity between step 1 and 2 rates is either of the following.
What are an equation and a reaction?A white precipitate is produced as nothing more than an outcome of a reaction which the bonds between it proteins of the reactant and product are shattered and new bonds. A chemical equation essentially explains how reactants lead to products using mathematics.
By equation, what do you mean?They are phrases that use chemical symbols and formulae to represent catalysis. The reactants are depicted on left in a simple reaction, while the products are shown on the right.
Rate of reaction is equal to the quantity of reactant utilized divided by the time it takes for the reactant to be consumed.
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The complete question is-
Step 1:H2(g)+ICl(g)→HI(g)+HCl(g)(slow)Step 2:HI(g)+ICl(g)→HCl(g)+I2(g)(fast)The reaction is carried out at constant temperature inside a rigid container. Based on this mechanism, which of the following is the most likely reason for the different rates of step 1 and step 2 ?
determine both the total number of protons and the total number of neutrons in an atom of the naturally occurring carbon isotope with the largest mass number.
The total number of protons are 6 and the total number of neutrons are 7 in an atom of the naturally occurring carbon isotope with the largest mass number.
Isotopes of almost all elements save hydrogen get their names from the mass number of their nuclei. Carbon atoms, for instance, have a mass number of 12 since the sum of their six protons and six neutrons equal 12. As a result, these atoms are referred to as carbon-12. The atomic mass of carbon atoms with seven neutrons is 13, which is equal to six protons plus seven neutrons. The isotope known as carbon-13 can be found in these atoms.
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A given mass of gas occupied 150 cm cube at 27 degrees C and pressure of 1.013x10^5 Newton per metre square. calculate the temperature at which it volume doubled at the same pressure
The temperature at which it volume doubled at the same pressure is 600 kelvin.
Calculating the problem:Given that,
initial volume (V₁) = 150 cm³
final volume (V₂) = 300 cm³
initial temperature (T₁) = 27⁰C
= (273 + 27) K = 300 K
final temperature (T₂) = ?
As we know from Charles's law:
V₁/T₁ = V₂/T₂
or, 150 / 300 = 300 / T₂
or, T₂ = 600 K
Charles' Law: What is it?
The ideal gas volume at constant pressure is exactly proportional to its absolute temperature, as stated by Charles' law. According to Charles' law, the temperature in degrees Kelvin is directly proportional to volume if the pressure on a dry gas sample remains constant.
Charles Law is used in everyday life in ways like hot air balloons in the sky. The flame heats the air inside the balloon, accelerating and dispersing the air molecules.
The balloon can simply float because the air inside is less dense than the air outside.
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Identify the longest, shortest, strongest, and weakest bonds from those highlighted below: H;C C Hjc CHj CHg HaC_CHz_CH-CH} CH, longest: shortest: strongest: weakest:'
In chemistry, bond strength is the force that a chemical bond uses to hold two atoms together. This is typically stated in terms of the kilocalories per mole of energy needed to break the bond.
The more electron pairs there are in a bond between two atoms, the stronger the link becomes.
The bond length typically reduces as the binding strength rises. This leads us to the conclusion that triple bonds are both stronger and shorter than double bonds between the same two atoms, and that double bonds are both stronger and shorter than single bonds between the same two atoms.
The complete question and answer are attached as images.
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