What is oxidized and what is reduced in this reaction? cu(s) 2agno3(aq) → cu(no3)2(aq) 2ag(s) cu is reduced and ag is oxidized. ag is reduced and cu is oxidized. no3 is oxidized and cu is reduced. ag is oxidized and no3 is reduced.

The presence of nonbonding electron pairs, also known as lone pairs or nonbonding electron domains, can have an effect on the shape of molecules. These lone pairs influence the molecular geometry by exerting electron repulsion and affecting the arrangement of atoms and bonding pairs.

Molecules that commonly exhibit the influence of nonbonding electron pairs on molecular shape include:

Water (H2O): In water, the two lone pairs of electrons on the oxygen atom affect the molecular shape, leading to a bent or V-shaped geometry.

Ammonia (NH3): Ammonia has one lone pair of electrons on the nitrogen atom, which leads to a pyramidal shape.

Nitrogen trifluoride (NF3): NF3 has one lone pair of electrons on the central nitrogen atom, resulting in a trigonal pyramidal shape.

Carbon dioxide (CO2): Although carbon dioxide does not possess any lone pairs on the carbon atom, the presence of two double bonds results in a linear molecular shape.

Sulfur hexafluoride (SF6): The six lone pairs of electrons on the sulfur atom in SF6 cause electronic repulsion, resulting in an octahedral shape.

These are just a few examples, but there are many molecules where nonbonding electron pairs influence the overall molecular shape. The presence and arrangement of these lone pairs affect the bond angles and distortions from ideal geometries in molecules, ultimately determining their three-dimensional shapes.

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The greatest positive enthalpy change has PCl₅(g) → P(g) + 5Cl(g)

An enthalpy change is difference between the enthalpy after the chemical reaction has completed.

An enthalpy change of phosphorus(V) chloride (PCl₅) molecule is energy needed for breaking up one molecule of phosphorus(V) chloride into one phosphorus and five chlorine atoms.

In a chemical reaction, chemical bonds are forming and breaking and this cause the transformation of one group of chemical substances to another.

Energy is needed to break chemical bonds in molecules (positive enthalpy change), while during formation of molecule, energy is released (negative enthalpy change)

The stronger are the bonds, more energy is needed and enthalpy change is more positive.

PCl₅ has more bonds to break than PCl₃.

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The products and the reactants are the components of the reaction. The equation of phosphoric acid represents the decomposition reaction as it forms oxygen and water. Thus, option a is correct.

A decomposition reaction is a  chemical breakdown of the reactant into two or more products. The large and complex compound breaks into smaller and simpler molecules.

The following equation, 4 H₃PO₄ → P₄ + 5 O₂ + 6 H₂O is an example of decomposition as phosphoric acid breaks into phosphorus, water, and oxygen molecules.

Therefore, option a. the reaction of phosphoric acid is a decomposition reaction.

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Answer:

1 NaCl

Explanation:

If the reaction was run with 23.5 g LiOH and an excess of potassium chloride. 18.85 g LiCl was produced. 45.3% is the percent yield for this run of the reaction.

Thus, (Actual yield / Theoretical yield) x 100 is a formula for calculating the reaction's percent yield. With 18.85 g of LiCl produced and a theoretical yield of 41.58 g based on stoichiometry, the actual yield is around 45.3%. This shows that the conversion of LiOH to LiCl occurred with a modest degree of efficiency.

With a percent yield of around 45.3%, the reaction converted LiOH to LiCl with a mediocre level of efficiency. The reduced yield might be caused by elements like an incomplete reaction, adverse reactions, or loss during purification. LiOH is totally consumed when there is too much potassium chloride present, but maximal LiCl generation is not ensured.

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Commercial agriculture can lead to water-quality problems because water can be used for irrigation and washing chemical products.

The term commercial agriculture makes reference to the techniques to produce high yields in extensive crops.

Commercial agriculture may lead to contamination problems due to the use of herbicides and pesticides.

In conclusion, commercial agriculture can often lead to water-quality problems because water can be used for irrigation and washing chemical products.

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Answer: the answer is D which is “Both processes involve the folding of the cell membrane”

Answer:

2.088464 grams.

Explanation:

The density of neon is 0.9002 g/L. Multiplying this value by the number of liters gives how many grams of neon it contains.

0.9002(2.32) = 2.088464

Answer:

602.2*10^21 and 60.22*10^22 respectively

Explanation:The molar mass for Al(C2H3O2) is 145.028G/ML. One mole of anything will contain 6.022* 10^23 molecules. If you are simply looking to express your answer using an exponent of 21 or 22 the answer would be 602.2*10^21 and 60.22*10^22 respectively. Hope this helps respectively. Hope this helps!

Answer:

i dont know but good luck beacuse im doing the test and im stuck ngl

Explanation:

Answer:

B

Explanation:

Answer:

it is a infectiousr bacterial disease characterized by the growth of nodules(tubercles) in tissues especially the lungs

Answer:

Explanation:

Entropy is measure of disorder so as we lower the temperature of gas , its entropy decreases .

Hence at - 200°C entropy of nitrogen will be less than that at - 190°C .

At freezing point ,

entropy of fusion  = latent heat / freezing temperature

= .71 kJ / ( 273 - 210 )

= 710 / 63 J mol⁻¹ K⁻¹ .

= 11.27 J mol⁻¹ K⁻¹ .

entropy of fusion = 11.27 J mol⁻¹ K⁻¹ .

The most stable (tightly bound) atomic nucleus in the universe is the nucleus of iron-56 (56Fe). It has the highest binding energy per nucleon among all known elements.

Nuclear stability is determined by the balance between the strong nuclear force, which holds the nucleus together, and the electrostatic repulsion between protons, which tends to push the nucleus apart.

The binding energy per nucleon is a measure of the stability of a nucleus, indicating the amount of energy required to separate a nucleon from the nucleus.

Iron-56 has the highest binding energy per nucleon compared to other elements.

This means that, on average, the nucleons in iron-56 are more tightly bound than in any other nucleus. As a result, iron-56 is the most energetically favorable configuration, and any deviation from this configuration tends to release energy, either through fusion or fission reactions.

The stability of iron-56 is crucial for stellar nucleosynthesis, as it represents a key endpoint in the fusion processes occurring in the cores of massive stars.

It also plays a significant role in determining the relative abundance of elements in the universe.

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Answer:

CaBr2 is a colorless solid and the charge on Calcium is +2

Explanation:

CaBr2 is a colorless solid at room temperature.

Other properties include -

a) It is a crystalline solid

b) Melting point of 765°C.

c) It is deliquescent

d) Soluble in water and absolute alcohol.

The charge of Br is -1. Here two atoms of Br attaches with one atom of calcium. Hence the charge of calcium is +2

Answer: 1 mole of H2O= about 1/3 of a cup (18 mL). It is helpful ... 6.02 x 1023 H2O molecules. = 6.02 x 1023 NaCl formula unit. 1 mole C. 1 mole H2O. 1 mole

Explanation:

Answer:

1 mole =56 g

18.5 moles =56×18.5

Answer:

Explanation:

Using Charles's Law to solve this question: V1/T1 = V2/T2

V1 = 2.24L

T1 = 52C (covert to Kelvin by plus 273.15) = 325.15K

V2 = 1.66L

T2 = ?

V1/T1 = V2/T2 must change to V2×T1/V1 = T2

1.66 x 325.15/2.24 = V2

V2 = 240.96K ≈ 241K

Answer:

usually referring to chemical elements that are solid

pononium ,and silver

Explanation:

hope it helped

The molecular formula of compound A is C₂H₅., the molecular formula for compound B is C₇H₁₄.

Empirical formula is the most straightforward formula for a compound and provides the ratio of various atoms found in each compound molecule.

The empirical formula for the two compounds is CH₂. To determine the molecular formula, we need to know the molar mass of the compounds.

If the molar mass of compound A is 60.05 g/mol, and the empirical formula is CH₂, we can calculate the molecular formula by dividing the molar mass by the molar mass of the empirical formula.

60.05 g/mol / (12.01 g/mol + 2 x 1.01 g/mol) = 2.5

Therefore, the molecular formula for compound A is C₂H₅

Similarly, if the molar mass of compound B is 180.16 g/mol, and the empirical formula is CH₂, we can calculate the molecular formula by dividing the molar mass by the molar mass of the empirical formula.

180.16 g/mol / (12.01 g/mol + 2 x 1.01 g/mol) = 7.5

Therefore, the molecular formula for compound B is C₇H₁₄.

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Answer:

Yup B

Explanation:

The given chemical equation can be balanced as: CH4 + 2O2 → CO2 + 2H2OTherefore, the balanced chemical equation for the reaction between 46 g of CH4 and 32 g of O2 is:CH4 + 2O2 → CO2 + 2H2OMoles of CH4 = (46 g)/(16.04 g/mol) = 2.87 molMoles of O2 = (32 g)/(32 g/mol) = 1 mol.

Moles of CH4 = (46 g)/(16.04 g/mol) = 2.87 molMoles of O2 = (32 g)/(32 g/mol) = 1 molFor the given reaction, one mole of CH4 reacts with 2 moles of O2. Therefore, 2.87 moles of CH4 would react with 2 × 2.87 = 5.74 moles of O2. As we can see from the given values, only 1 mole of O2 is present. Hence, O2 is the limiting reactant.The balanced chemical equation for the reaction between 46 g of CH4 and 32 g of O2 is:CH4 + 2O2 → CO2 + 2H2OOn

The basis of the balanced chemical equation, 2 moles of O2 is required for one mole of CH4. Here, the moles of O2 is lesser than 2 times the moles of CH4, which means O2 is the limiting reactant and CH4 is the excess reactant. Hence, 32 g of O2 will react completely with 1 mole of CH4, and 14.14 g of CO2 and 4 g of H2O will be produced as per the stoichiometry.

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Answer:

Most Medicare Advantage plans also fold in prescription drug coverage. Not all of thesef, g, and h. If you don't know the answer to all parts then just tell me the answer to the parts you know, and if you

The best way to clean any computer component or device is to follow the manufacturer's instructions in your user manual.

Always power off the system first.

Always use anti-static wristband or other professional grounding devices.

Never work on carpeted surfaces.

Please help me with this question, I already did part a and part b. Can someone please tell me how to do part c, d, e,

The theoretical yield for this reaction is 78.61 g of CO2 and the percent yield is 20.0%, when 50.0 g of MgCO3 react completely with H3PO4.

The theoretical yield is the maximum amount of product that can be produced from a chemical reaction, calculated using the stoichiometry of the reaction equation. It is based on the assumption that the reaction proceeds perfectly, without any loss or waste of reactants, and without any interference from side reactions.

The theoretical yield is calculated by determining the number of moles of each reactant, using the balanced chemical equation to calculate the number of moles of product that can be produced, and then converting this to the corresponding mass of product. It is a useful reference for determining the efficiency of a reaction and for evaluating the quality of the results obtained in a laboratory experiment.

Calculation of Theoretical yield

To calculate the theoretical yield, determine the number of moles of MgCO3 and use the balanced chemical equation to calculate the number of moles of CO2 produced.

The number of moles of MgCO3 is given by:

n(MgCO3) = m(MgCO3) / M(MgCO3)

n(MgCO3) = 50.0 g / 84.31 g/mol

n(MgCO3) = 0.595 mol

Using the balanced chemical equation, calculate the number of moles of CO2 produced:

n(CO2) = 3 * n(MgCO3)

n(CO2) = 3 * 0.595 mol

n(CO2) = 1.785 mol

The mass of CO2 produced can then be calculated:

m(CO2) = n(CO2) * M(CO2)

m(CO2) = 1.785 mol * 44.01 g/mol

m(CO2) = 78.61 g

This is the theoretical yield for the reaction.

The percent yield is a measure of the efficiency of the reaction, and is calculated as the ratio of the actual yield to the theoretical yield, multiplied by 100:

% yield = (actual yield / theoretical yield) * 100

% yield = (15.8 g / 78.61 g) * 100

% yield = 20.0%

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Specific heat capacity if the unknown metal is -0.450 J/(g°C).

The measure of heat complexity needed to increase the temperature of a single unit of substance mass by one degree Celsius is known as specific heat capacity. This factor is crucial in determining how much energy is required for temperature changes in a given substance.

q = mcΔT

where q is the change in thermal energy, m is the mass of the metal, c is its specific heat capacity, and ΔT is the change in temperature.

In this case, we have:

m = 150 g

ΔT = 22.4°C - 12.6°C = 9.8°C

q = -662 J

Plugging in the values,

-662 J = (150 g) c (9.8°C)

Solving for c, we get:

c = -662 J / (150 g × 9.8°C) = -0.450 J/(g°C)

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Explanation:

Copper (II) sulfate is usually present as a hydrous state, which is of the form CuSO4 * nH2O, where n is a whole number.

Mass of sample (CuSO4 * nH2O)

= 152.00g - 128.10g = 23.90g.

Mass of water loss during heating

= 152.00g - 147.60g = 4.40g.

Molar mass of H2O = 18g/mol

Moles of H2O in sample

= 4.40g / (18g/mol) = 0.244mol.

Mass of anhydrous sample (CuSO4)

= 23.90g - 4.40g = 19.50g

Molar mass of CuSO4 = 159.61g/mol

Moles of CuSO4 in sample

= 19.50g / (159.61g/mol) = 0.122mol.

Since mole ratio of CuSO4 to H2O

= 0.122mol : 0.244mol = 1:2, n = 2.

Hence we have CuSO4 * 2H2O.

Answer:

Copper(II) Sulphate (CuSO4.7H2O) is generally present in a hydrated form.

Mass of the CuSO4.7H2O sample before heating

(152.00-128.10)g = 23.90 grams

Mass of the water loss due to heating

(152.00-147.60)g = 4.40 grams

D. 9. 7 mol of water are needed to react completely with 7. 3 moles of iron (Fe)

To determine the number of moles of water needed to react completely with 7.3 moles of iron (Fe), we need to balance the chemical equation for the reaction between iron and water. The balanced equation is:

3 Fe + 4 \(H_{2}O\) -> \(Fe_{3}O_{4}\) + 4 \(H_{2}\)

According to the balanced equation, 4 moles of water are required to react with 3 moles of iron. This means that the stoichiometric ratio between water and iron is 4:3.

Given that we have 7.3 moles of iron, we can use this ratio to calculate the amount of water needed. We set up the following proportion:

4 moles \(H_{2}O\) / 3 moles Fe = x moles \(H_{2}O\) / 7.3 moles Fe

Cross-multiplying and solving for x, we find:

x = (4 moles \(H_{2}O\) / 3 moles Fe) * 7.3 moles Fe

= 9.73 moles \(H_{2}O\)

Therefore, approximately 9.7 moles of water are needed to react completely with 7.3 moles of iron. The closest option provided is 9.7 mol water. Therefore, Option D is correct.

The question was incomplete. find the full content below:

How many moles of water (\(H_{2}O\)) are needed to react completely with 7. 3 moles of iron (Fe)? * 2 points

A. 5. 5 mol water

B. 2. 4 mol water

C. 4. 0 mol water

D. 9. 7 mol water

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Answer:

higher temperature, more kinetic energy, more space between particles, higher volume

This is true because increase in temperature kinetic energy increase so molecules move apart and increase volume

Explanation:

Answer:

Earth’s ____gravity_____ (g) is nearly the same at any point on its surface.

The value of g near Earth’s surface is _ten__ meters per second squared (__10 (preciesly it is 9.8)___ m/s2).

If m is the mass of an object and g is gravity, then we can find the weight, W, of the object by using the

formula W = __m×g__.

The weight of an object is approximately equal to _g__ ______________ if the mass of the object is 1 kilogram on Earth, where g = __10 (9.8)___ m/s2 fill in the blank

Explanation: