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 ?
in photoelectron spectrum for sulfur atoms, which electron corresponds to peak with lowest binding energy ?
In photoelectron spectrum for sulfur atoms valence electrons corresponds to peak with lowest binding energy.
What can be seen in a photoelectron spectrum?The relative energies of occupied molecular orbitals can be determined from a photoelectron spectrum by ionization. (i.e. the electron's ejection). The energy spacing between the vibrational levels of a specific electronic state can also be determined using a photoelectron spectrum.
The electrons in the atom's various subshells are represented by the peaks in the PES spectra. The valence electrons are represented by the peaks with the lowest binding energies, while the inner-shell or core electrons are represented by the peaks with the highest binding energies.
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predict whether aqueous solutions of the following compounds are acidic, basic, or neutral.
Based on the products formed when they react with water, the following is true:
AlCl₃ - Acidic.
NaBr - Neutral.
NaClO - Acidic.
3CH₃NH₃NO₃ - Acidic.
Na₂SO₃ - Basic.
What is compounds?A chemical compound is a substance made of numerous identical molecules joined by chemical bonds and containing atoms from various chemical elements. Therefore, a molecule composed entirely of one element's atoms is not a compound.
Here,
given set of solution:
(a) AlCl3
(b) NaBr
(c) NaClO
(d) 3CH3NH34NO3
(e) Na2SO3
AlCl3 produces hydrochloric acid, a potent acid, when it reacts with water. The mixture is going to be acidic.
When NaBr reacts with water, it creates Sodium Hydroxide, a powerful base, and Hydrobromic acid, a powerful acid. They will balance each other out because they are both powerful, leaving a neutral result.
Sodium Hydroxide, a weak acid and a strong base, are the products of NaClO. The solution will be simple.
Nitric Acid, a strong acid, and a weak base will be produced by 3CH3NH3NO3, making the solution acidic.
Na2SO3 would generate Sodium Hydroxide, a strong base, and a weak acid, making the solution basic.
The following is true based on the products formed when they react with water:
Acidic AlCl3.
NaBr is a neutral compound.
NaClO is an acidic compound.
3CH3NH3NO3 is an acidic compound.
Na2SO3 is a basic.
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plese hurrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrry
Use the food web below and your knowledge of science to answer the question below.
Group 4 Food Web
Hawks are predators to small organism such as snakes, rabbits, and mice. What is a possible result of adding a hawk to this ecosystem?
Question 2 options:
The rabbit population will increase.
The grass population will increase.
The cougar population will increase.
All of the above
Answer:
Pretty sure that’s correct
Explanation:
Answer: The answer is:
The grass population will increase.
Explanation: Didn't see anything that could be correct, so I chose this on the K12 test and it was correct.
if a city water supply has a limit of 250 ppm of nitrate ion, what is the maximum amount of nitrate ion, in grams, that may be present in a 10,000-gallon reservoir?
Nitrate, also referred to as "cyan syndrome," is a potentially fatal blood disease that can affect neonates less than six months.
Why do plants need nitrates in the first place?The necessity of nitrates in plants. Phosphorus
potassium, and nitrogenPhosphorus The growth of leaves is mostly controlled by nitrogen. Plants utilize nitrates, which are compounds of nitrogen and oxygen. Typically, they absorb nitrates from the soil.
How do plant roots respond to nitrification?Uptake and Needs of Plant Nitrogen Plants can take up the soil's nitrogen as NH4+ and NO3 ions, but most of it is snapped up as nitrate due to how common nitrification is in agricultural soils. Nitrate is easily transported to plants.
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What is the difference between a magma formed by fractional crystallization and one formed by ordinary cooling?
The difference between a magma formed by fractional crystallization and one formed by ordinary cooling is that the magma becomes progressively enriched in silica.
What is fractional crystallization of magma?Processes that separate crystals from liquid are referred to as fractional crystallization. The liquid that is left over in this situation is regarded as a fresh magma. The crystals can be removed from a magma by a number of methods. The liquid that many minerals crystallise from is denser than the mineral itself.Fractional crystallisation, in its simplest form, is the removal of newly created crystals from an initially homogenous magma (for instance, via gravity settling) in order to stop these crystals from reacting further with the remaining melt.All igneous rocks are created from magma, which is a naturally occurring substance that is molten or semi-molten. The Earth possesses magma beneath its surface, and other terrestrial planets and several naturally occurring satellites have also been confirmed to have magmatic activity.Learn more about fractional crystallization of magma refer to :
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then write the lewis structure for Ne. draw the particle by placing atoms on the grid and connecting them with bonds. include all lone pairs of electrons and nonbonding electrons
Neon: Ne, Z=10=10e-=152 2S2 2p The Structural formula for Ne looks like this. Lewis structures use the chemical symbol for each atom to show where it is located within the molecule's structure.
How are Lewis structures drawn, and what are they?
The distribution of valence electrons around the atoms of a molecule is depicted in a Lewis diagram. While lone electron pairs are depicted as dots beside each other atoms, shared electron pairs are shown as lines between them.
Describe Lewis's structure with an example.
The octet rule, which states that atoms share electron so that each has eight in its outer shell, is the foundation of a Metal lattice. For instance, the outer shell of an oxygens has six electrons.
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According to Boyle's Law, the volume of a gas varies directly with its pressure when temperature is held constant.
According to Boyle's Law, the volume of a gas varies directly with its pressure when the temperature is held constant. The above statement is true statement.
Boyle's law is a fundamental law of chemistry that describes the behavior of gases kept at a constant temperature. Discovered by Robert A. Boyle in 1662, this law states that at a constant temperature, the volume of a gas is inversely proportional to the pressure exerted by it. Boyle observed that the product of pressure and volume is approximately constant. The product of pressure and volume is exactly constant for an ideal gas. p * V = constant. This pressure-volume relationship is named after Boyle's law. Boyle's law, also known as Marriott's law, is the relationship that governs the compression and expansion of gases at a constant temperature.
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Use the information in the square to answer the questions about copper. A purple box has C u at the center and 29 above. Below it says copper and below that 63.55.How many protons are in an atom of copper
The number of protons in an atom of copper is 29.
It can be determined from the element symbol, Cu, which stands for Copper. The atomic number of an element is the number of protons in the nucleus of an atom of that element and is typically located above the element symbol. In this case, the atomic number of copper is 29, as indicated by the number 29 above the element symbol Cu. This is the information provided in the square.
Additionally, we can calculate the number of neutrons by the given information.
The number of neutrons= Mass number - Atomic number.
In this case,
The number of protons in Cu= 63 - 29 = 34.
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What is the % yield if 4 moles of hydrogen is reacted with 3 moles of oxygen and produces 3 moles of water?
The balanced equation for the reaction between hydrogen and oxygen to form water is:
2H2 + O2 -> 2H2O
To react 4 moles of hydrogen with 3 moles of oxygen, we will also need 1.5 moles of oxygen.
Since we have enough hydrogen and not enough oxygen to react completely, we can calculate the theoretical yield of water produced.
4 moles of H2 will react to produce 2 moles of H2O and 1.5 moles of O2 will react to produce 0.75 moles of H2O. Therefore, the total theoretical amount of water produced is 2 + 0.75 = 2.75 moles of water.
percent yield = (actual yield / theoretical yield) x 100
percent yield = (3 / 2.75) x 100 = 109.09%.
So the percent yield is 109.09%. This means that 109.09% of the theoretical yield was actually produced, and the reaction was more efficient than expected.
It's worth noting that percent yield can't be more than 100% because it implies that more than the theoretical amount of product was produced, which is not possible. In this case, the percent yield is not a realistic value, therefore, the actual yield and the theoretical yield should be rechecked.
18. regarding the formula al2o3 which of the following is accurate? a. the coefficient 3 indicates that there are a total of three atoms of oxygen present in the substance. b. the chemical symbol al indicates that argon is present in the substance. c. the subscript 2 indicates that two atoms of aluminum are present in the substance. d. the subscript 2 indicates that two atoms of oxygen are present in the substance.
The subscript 2 denotes that the material contains two aluminum atoms. Silvery-white and light in weight, aluminum is a metal. It is supple and moldable. Cans, foil, culinary kitchenware, window frames, beer kegs, and airplane parts are just a few examples of the many goods that employ aluminum.
Which substances are present in aluminum?Gibbsite and boehmite, two alpha-hydroxide compounds, are found in bauxite. In the synthesis of aluminum compounds such aluminum disulfide, sodium aluminate, metal fluoride, & aluminum chloride hexahydrate, aluminum trihydroxide is a key ingredient.
How is aluminum produced?Natural environments do not contain pure aluminum. Beginning with bauxite, which is made up of dehydrated al2o3 (4.0% to 60%) combined with silica + iron oxide, the manufacturing of primary pure metal can begin. For every 4 to 5 tons of bauxite ore, 2 tonnes of aluminium are produced
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Enter the the Ksp expression for C2D3 in terms of the molar solubility x.
C2D3 has a solubility product constant of 9.14×10−9. What is the molar solubility of C2D3?
The molar solubility of C2D3 is calculated to be equal to 9.67 x 10^-3 mol/L .
What is molar solubility?The solubility of a substance is measured by the number of moles of the solute that dissolve in one liter of solution, or molar solubility. The quantity of ions dissolved per liter of solution is measured by molar solubility. In this case, solubility refers to how many ions can be dissolved in a specific volume of solvent.
As, C2D3 = (2x)^2 * (3x)^3= 108 x^5
Given, solubility product constant - 9.14×10−9
SO, 9.14 x 10^-9 = 108 x^5
Now, x = 9.67 x 10^-3
Hence, the molar solubility is 9.67 x 10^-3 mol/L.
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g in the beta oxidation pathway, what is the product of the enzyme acyl coa-dehydrogenase? assume the starting saturated fatty acid contains n carbons and n is an even number.
Assuming n is even and the initial saturated fatty acid has carbons CH Acetyl-CoA is the end result of acyl CoA-dehydrogenase.
What function does acyl-CoA dehydrogenase serve in the metabolism of fatty acids?ACAD are enzymes that catalyze the,-dehydrogenation of acyl-CoA derivatives in the catabolism of fatty acids and amino acids. The reconstructed human genome now recognizes eleven ACADs, and numerous homologs have been discovered in bacteria, mushrooms, plants, and worms.
What is acyl CoA dehydrogenase's purpose? What impact might a lack of acyl-CoA have?Overview. Low-molecular-weight acyl-CoA dehydrogenase An hereditary condition called MCAD deficiency hinders your body from metabolizing specific fats into energy. Consequently, your blood sugar level will increase.
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I need help ASAP! Both questions please!!
Answer and Explanation for the First Question:
For the first question, when a 3.0 M aqueous NaOH solution is added to a neutral solution containing litmus, the color change in the solution would be from purple to blue. Thus, the answer would be C.
Litmus exists in solution in equilibrium form as H-Lit(aq) (red) ⇌ H⁺(aq) + Lit⁻(aq) (blue). At around pH 7, or neutral, the solution contains an equal amount of both forms of litmus, resulting in a purple color. This is because there are always some H⁺ ions present in the solution, even in neutral solutions, and the red and blue forms of litmus are present in equal amounts, which make the solution purple.
When a strong base like NaOH is added to the litmus solution, the OH⁻ ions from NaOH fully dissociate and react with the H⁺ ions in the litmus solution, forming water. This reaction causes the equilibrium position to shift in the direction of replacing the lost H⁺ ions. As more H-Lit(aq) molecules dissociate to form H⁺(aq) and Lit⁻(aq), the litmus becomes more ionized.
Since ionized litmus in solution is blue, the color of the solution will change from a neutral purple to a basic blue.
Answer and Explanation for the Second Question:
For the second question, according to the information given, the most likely pH of the solution is 6.0. Thus, the answer would be B.
The pH of the solution can be determined by looking at the color change of the three indicators added. Bromocresol green is yellow at the acidic end of its range, blue at the basic end of its range, and its pH range is 3.8 to 5.4. Chlorophenol red is yellow at the acidic end of its range, red at the basic end of its range, and its pH range is 5.2 to 6.8. Thymol blue is yellow at the acidic end of its range, blue at the basic end of its range, and its pH range is 8.0 to 9.6. Since the solution is blue when bromocresol green is added and orange when chlorophenol red is added, the pH of the solution must be between 5.4 and 6.8. The only possible value in this range is 6.0, which is why it is the most likely pH of the solution.
Complete and balance the following equation: H2O2(aq)+ClO2(aq)→ClO2−(aq)+O2(g) (basic solution) Express your answer as a chemical equation. Identify all of the phases in your answer. H2O2(aq)+2ClO2(aq)+2OH−(aq)→O2(g)+2ClO2−(aq)+2H2O(l) What is the oxidant and reductant?
H2O2 is the reductant and ClO2 is the oxidant.
What does the term "reductant" mean?A material used in photography to reduce the density of a negative or print by oxidizing part of the free silver; capable of reducing another substance as it itself is oxidized. alternatives: reducing agent, reducer.
What do the terms "reducing agent" and "reductant" mean?A reducing agent is a material that, in a redox process, loses electrons to other substances and undergoes oxidation to a higher valency state. One of the reactants of an oxidation-reduction process is a reducing agent, which decreases the other reactant by discharging electrons to it.
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if you have a total of 0.6 moles of ch3cooh, how many moles of naoh would you need to completely neutralize ch3cooh? group of answer choices
We have choice (d) 0.6 mole of NaOH as the response based on the question.
How can acid be neutralized?The proportion of H3O+ ions within the solution is reduced by adding a base. Chemically speaking, a base and a acid are opposites. An acidic solution moves away from the centre of the pH scale and becomes less acidic as a base is introduced. This process of neutralize acid is known as neutralization .
For neutralization reaction :
Number of moles of acid, CH3COOH = Number of moles of base, NaOH = 0.6 mol
So, number of moles of NaOH required = 0.6 mol of NaOH
Therefore, option (d) " 0.6 moles of NaOH " is the answer.
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The Complete Question :
if you have a total of 0.6 moles of CH₃COOH, how many moles of NaOH would you need to completely neutralize CH₃COOH.
A) 0.9 moles NaOH
B) 0.3 moles NaOH
C) No test is provided
D) 0.6 moles NaOH
Indicate whether each of the following molecules is capable of geometrical (cis-trans) isomerism.
a. 1,1-dichloro-1-butene
b. 4,5-dimethyl-2-pentyne
c. 1,3-dichloro-2-butene
d. 1,4-dichlorobenzene
Comment on each molecule's ability to exhibit geometric (cis-trans) isomerism. Please illustrate the structures for those who are.
Isomerization: what do you mean?Isomerism is the occurrence of molecules with the same number and type of atoms (and thus the same structure) but chemical and physical capabilities.
The three different isomer kinds are what?Positional, chain, and functional group isomers are the three types of structural isomer.
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13 electrons are total in an element, what is it's quantum number.
Answer:
Explanation:
The quantum number of an element with 13 electrons is 2. The first quantum number, n, is the principal quantum number and describes the energy level of the electron. In this case, the principal quantum number of the element with 13 electrons is 2, meaning that the electrons are in the second energy level. The second quantum number, l, describes the shape of the orbital. In this case, the second quantum number is 1, meaning that the orbital is an s-orbital. The third quantum number, ml, describes the orientation of the orbital. In this case, the third quantum number is -1, 0, or +1, meaning that the orbital is oriented in the -x, 0, or +x direction. The fourth quantum number, ms, describes the spin of the electron. In this case, the fourth quantum number is +1/2 or -1/2, indicating that the electron has either a clockwise or counter-clockwise spin.
an aqueous sucrose (c12h22o11) solution must be created for an experiment. if 100.00 ml of 0.200 m solution is needed, what amount of sucrose (in grams) must be weighed out? only input numbers. your answers must be expressed to the hundredth place. any values less than one must have a zero in front of the decimal (e.g. 0.01 not .01).
The amount of sucrose (in grams) must be weighed out for the given reaction is6.846g.
Moles n = W/ M
Given detail.
molarity of sucrose = 0.2 M
volume of solution 100 ml
Relationship between moles and molarity is.
M = n/ V
On placing value in it
n = 0.02
molar mass of sucrose = 342.3 g/ mole
Now we calculate needed mass from 1st equation.
W = (0.02) (342.3)
= 6.846 g
Molarity is defined as the moles of a solute per liters of a result. Molarity is also known as the molar concentration of a solution.
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determine the number of moles of sodium in 3.148e22 atoms of sodium metal
Answer: 4.980e90
Explanation:
Identify the Lewis acid in the followingreaction:
Hg^{2+}(aq)+\rm 4CN^-(aq) <=> {Hg(CN)_4}^{2-}(aq)
a. Hg^{2+}
b. CN^-
c. {Hg(CN)_4}^{2-}
Lewis acid will be hg2+ in the reaction hg2+(aq)+4cn(aq)hg(cn)42(aq). Lewis acids are chemical entities that have an empty orbital.
Write Lewis acid examples in ch4 ?Ammonia giving to a Lewis acid or an electron acceptor. All substances cannot function as Lewis bases. For instance, the valence electrons in the chemical compound methane (CH4) are all in pairs. Hydrogen isn't a Lewis base because these bonding units are too secure to transfer under usual circumstances.
How can a Lewis acid be recognized?Each Lewis acid-base reaction has an acid and a base. Strategy: Find the reactant that lacks an electron and the reaction that can donate an electron pair in each equation. The Lewis acid is the electron-deficient molecule, while the other is the
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which represents the balanced nuclear equation for the beta minus decay of co-60?
A) 6/2He -> 6/3Li + 0/-1e
B) 60/27 Co -> 60/28Ni + 0/-1e
C) 32/15P -> 32/16S + 0/-1e
D) 15/8O -> 15/7N + 0/1e
The balanced nuclear equation for the beta minus decay of co-60 will be
60/27 Co -> 60/28Ni + 0/-1e.
Nuclear reaction are the processes in which one or more nuclides are produced from the collisions between the two atomic nuclei or the one atomic nucleus as well as a subatomic particle. The nuclides produced from nuclear reactions will be different from the reacting nuclei (commonly referred to as a parent nuclei).
In a nuclear reaction, the atomic number is conserved as well as the mass number will be conserved.
Therefore, 60 = A+0 ⇒ A = 60
Also, 27 = Z + (-1) ⇒ Z = 28
Thus, the element of x will be 60/28Ni.
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What is the molarity when 24 grams of lioh is added to 200 ml of water?
24 grams of lioh is added to 200 ml of water the molarity is 8M.
What is meant by molarity?
The amount of a substance in a specific volume of solution is known as its molarity (M). The number of moles of a solute per liter of a solution is known as molarity.The molar concentration of a solution is another name for molarity.A chemical species' concentration in a solution, specifically the amount of a solute per unit volume of solution, is measured by its molar concentration.The number of moles per liter, denoted by the unit symbol mol/L or mol/dm3 in SI units, is the most often used unit denoting molarity in chemistry.One mol/L of a solution's concentration is referred to as one molar, or 1 M.molarity = 8M
Given weight = 24g
molar mass of lithium hydroxide = 7+16+1=24g
volume = 200ml
= 0.25ml
Number of mole (n) = given weight /molar mass of lithium hydroxide
n = 24/24
=1
Molality = Number of mole (n) /volume of solvent
molality = 0.25L / 1
= 8M
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Prepare six straight dilutions of the 0.1% BPB solution. The six dilutions are 1:2, 1:4, 1:5, 1:10, 1:50, 1:100 of your 0.1% solution. The final volume of each dilution should be 4 ml.
What is the final % BPB in each dilution?
The final % BPB in each dilution is 0.001%, 0.0005%, 0.0004%, 0.0002%, 0.00004% and 0.00002%.
To calculate the final % BPB in each dilution, you need to take into account the dilution factor and the initial concentration of the 0.1% BPB solution. The dilution factor is the ratio of the final volume to the initial volume.
The final concentration of BPB in each dilution can be calculated by using the following formula:
Final concentration = Initial concentration x dilution factor
The dilution factors for each dilution are 1:2, 1:4, 1:5, 1:10, 1:50 and 1:100 respectively. By multiplying the initial concentration of 0.1% with these dilution factors, we get the final concentrations of 0.001%, 0.0005%, 0.0004%, 0.0002%, 0.00004% and 0.00002% respectively.
It's important to note that when preparing dilutions, it is important to make sure that the final volume of each dilution is the same, in this case it's 4ml and to use the appropriate dilution factor for each case, as it affects the final concentration of BPB.
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two samples of matter from two different sources are analyzed and have the same mass percent composition of their elements. what can the samples be classified as?
If two samples of matter from two different sources have the same mass percent composition of their elements, they can be classified as isotopic compounds.
Isotopic compounds are compounds that have the same number and types of atoms, but they may have different isotopes of those atoms. Isotopes are atoms of the same element that have the same number of protons but a different number of neutrons.
Because they have the same number of protons, they have the same atomic number and chemical properties, but because they have different numbers of neutrons, they have different atomic masses and may have different physical properties.
When two samples have the same mass percent composition of their elements, it means that they have the same number of atoms of each element, and the weight of each element is also the same, which means that they are isotopic compounds.
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Write the chemical equation for the ionization of dimethylamine, (CH3)2NH in aqueous solution.
The reaction is also an example of proton transfer, as the proton (H+) from the dimethylamine is transferred to water, forming the cation and anion.
What is dimethylamine?Dimethylamine is an organic compound with the molecular formula CH3-2-NH2. It is a base, colorless gas with a strong, fishy odor and is used in a variety of industrial applications.
The ionization of dimethylamine (CH3)2NH in aqueous solution can be represented by the following chemical equation:
(CH3)2NH + H2O → (CH3)2NH2+ + OH-
In this reaction, dimethylamine reacts with a water molecule to form a dimethylammonium cation (CH3)2NH2+ and a hydroxide anion OH-. This reaction is an example of an acid-base reaction, where dimethylamine is the acid and water is the base. The reaction is also an example of proton transfer, as the proton (H+) from the dimethylamine is transferred to water, forming the cation and anion.
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A tudent wa determining the texture of a oil but took the 2 hour reading 30 minute late. The tudent will probably over etimate the amount of in the ample
The student's knowledge is limited to the fact that the sample is not a heterogeneous combination.
What is mean by ample?In terms of size, scope, or capacity, generous or superior. There was space for a sizable garden—generously enough to meet a demand or necessity. Its root word, amplus, means "big," "broad," or "spacious" in Latin. The roots of the terms amplitude and amplify are identical. Although the word "amplitude" can also refer to the state of being ample, it is normally employed in technical and scientific measures in a more particular manner.
What is ample used for?Ample refers to sufficient or appropriate amounts. It can also be used to denote abundance or plenty—more than enough. It is frequently used to denote that there is enough or more than enough of what is required in the context of things like time, place, space, supplies, or resources (such food and money).
The sample of material provided to the student is said to be uniform in both color and texture. The makeup of a homogeneous sample is uniform, and it's probable that this one is as well. The composition of a compound is uniform, and this sample might be one. Additionally, an element has a consistent composition, hence the sample might be an element. Last but not least, a heterogeneous sample is one that does not have a uniform makeup; as a result, this sample is unquestionably not heterogeneous.
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Consider the width of each block and its relation to the subshell being filled. Complete the table. Num of Orbitals s 14 p 30 d 40 f 28 Width of Periodic Block 1 3 5 7 Next (11 of 12) Incorrect
A collection of electrons in a shell organized into subshells based on the form of the space they fill.
Each subshell's electrons are organized into orbitals, which are areas of the atom's interior where a certain electron is most likely to be found. An atomic orbital is a function that describes the position and wave-like activity of an electron in an atom in terms of both atomic theory and quantum mechanics.
This function can be used to determine the likelihood of discovering any atom's electron in any particular area surrounding the nucleus.
The physical area or space where the electron may be calculated to be present, as predicted by the specific mathematical shape of the orbital, is sometimes referred to as an atomic orbital.
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can someone help me pls ,,
Balance the following equations
1. N2O5 -> N2O4 + O2
2. KNO3 -> KNO2 + O2
3. NH4NO2 -> N2 + H2O
4. O3 -> O2
5. Zn + AgCl -> ZnCl2 + Ag
6. NaOH + H2SO4 -> NA2SO4 + H2O
Answer:
Explanation:
Rather than doing all the reactions, let's look at one in detail and develop a process for answering the rest.
Start with a pencil and paper. Pencil, because balancing equations requires some initial guesses that often need to be changed (erased).
Make a table such as shown on the attached worksheet. The first problem is demonstated on the attachment.
1. N2O5 -> N2O4 + O2
2N2O5 -> 2N2O4 + 1O2
2. KNO3 -> KNO2 + O2
We only need 1 K and 1 N for the producrs, and 1 KNO3 supplies that number. But 1 KNO3 has 3 O atoms, while the only place for the O atoms to go is )2, a diatomic molecule. To obtain 2O for the 1O2, we need to change the KNO3 coefficient to 2:
2KNO3 -> KNO2 + O2
Now change the KNO2 coefficient to 2 (to accomodate the 2 K and 2 N atoms):
2KNO3 -> 2KNO2 + O2
The reactants have 6 O atoms, so we should be balanced:
2KNO3 -> 2KNO2 + O2
K 2 2
N 2 2
O 6 4+2 = 6
3. NH4NO2 -> N2 + H2O
NH4NO2 -> N2 + 2H2O
N 2 2 0
H 4 0 4
O 2 0 2 Everything is balanced
4. O3 -> O2
O3 -> O2
2O3 -> 3O2
6 O 6 O
5. Zn + AgCl -> ZnCl2 + Ag
Zn + 2AgCl -> ZnCl2 + 2Ag
Zn 1 1
Ag 2 2
Cl 2 2
Everything is balanced.
6. 2NaOH + H2SO4 -> Na2SO4 + 2H2O
Na 2 0 2 0
O 2 4 4 2
H 2 2 4
S 1 1
Indicate the hybridization about each interior atom in N2H2 (skeletal structure HNNH).
a. 1st N (sp 2); 2nd N (sp 2)
b. 1st N (sp 3); 2nd N (sp 2)
c. 1st N (sp 3); 2nd N (sp 3)
d. 1st N (sp 2); 2nd N (sp 3)
a. 1st N (sp 2); 2nd N (sp 2) is correct for the hybridization about each interior atom in N2H2.
What is the hybridization of nitrogen atoms in N2H2 molecule?The nitrogen atoms in N2H2 molecule are sp2 hybridized. This is because the nitrogen atoms are bonded to three other atoms (two hydrogen atoms and one nitrogen atom) in a trigonal planar geometry, which requires three hybrid orbitals for bonding.
How to define the concept hybridization?Hybridization is a theoretical concept used in chemistry to explain the bonding geometry of certain atoms in a molecule. It refers to the process of mixing atomic orbitals of similar energy to form a set of equivalent hybrid orbitals. The hybridization of an atom can be determined by the number and type of atoms it is bonded to and the geometry of the molecule. The most common types of hybridization are sp3, sp2, and sp, which correspond to tetrahedral, trigonal planar, and linear geometries, respectively.
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if it takes three breaths to blow up a balloon to 1.2 l and each breath supplies the balloon with 0.60 moles of exhaled air, how many moles of aur are un a 3.0 l ballon?
If it takes three breaths to blow up a balloon to 1.2 liters and each breath supplies the balloon with 0.60 moles of exhaled air, the total number of moles of air in the 1.2 L balloon is:
0.60 moles/breath x 3 breaths = 1.8 moles
To find out how many moles of air are in a 3.0 L balloon, you can use the relationship between moles and volume (at constant temperature and pressure):
n = PV/RT
where:
n = number of moles
P = pressure (assumed to be constant)
V = volume
R = ideal gas constant
T = temperature (assumed to be constant)
Since the balloon is filled with exhaled air, we can assume that the temperature and pressure inside the balloon are approximately the same as the ambient temperature and pressure. So we can use the ideal gas constant (R) and the current temperature (T) to calculate the number of moles of air in a 3.0 L balloon.
Then,
n = (1.8 moles * 3.0 L) / (R * T)
It should be noted that we are assuming a constant temperature and pressure, and also exhaled air is not a pure gas and its composition can vary, thus the ideal gas law may not be the most accurate way to calculate the number of moles of air in a balloon.
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