ck12: 12

The reaction between lead(II) nitrate and aluminum chloride produces lead(II) chloride and aluminum nitrate. Find the mole ratios of lead(II) nitrate to aluminum chloride and lead(II) chloride to aluminum nitrate.

3:2 and 3:2

Given the following equation: 2N2 + 5O2 → 2N2O5 How many moles of N2O5 are produced by reacting 10 moles of O2?

4 moles

One mole of fluorine reacts with two moles of hot, concentrated potassium hydroxide. The products formed are KF,H2O and O2. The molar ratio of KF,H2O and O2 is:

4:2:1

Chromium(III) oxide reacts with hydrogen sulfide gas to produce chromium(III) sulfide and water. How many moles of chromium(III) oxide and hydrogen sulfide required to produce 6.65 moles of chromium(III) sulfide?

6.65 moles chromium(III) oxide and 19.95 moles hydrogen sulfide

How many moles of NO2 are required, if 5.66 moles of HNO3 are produced in the reaction? NO2+H2O→HNO3+NO

8.49 mol

While solving stoichiometry problems using proportions, we solve the proportion to find the moles of the known.

FALSE

Magnesium metal reacts with a solution of silver nitrate in a single-replacement reaction and follows the chemical reaction below. Mg(s)+2AgNO3(aq)→Mg(NO3)(aq)+2Ag(s) If a reaction starts with 0.480 mol Mg, how many moles of silver are produced? ________mol Ag

.96

Copper reacts with silver nitrate to produce silver and copper(II) nitrate. In this reaction 40.7 g of silver is produced. Calculate number of moles of each reactant.

0.188 moles of copper and 0.376 moles of silver nitrate

Calculate the number of moles present in 9.50 g of CO2.

0.215 mole

Given the following equation: Mg + 2HCl → MgCl2 + H2 How many moles of H2 can be produced by reacting 2 moles of HCl?

1 mole

Given the following equation: Zn + 2HCl → H2 + ZnCl2 How many moles of HCl are needed to react with 0.50 moles of Zn?

1.0 mole

Hydrogen sulfide and concentrated sulfuric acid react to form water and sulfur dioxide as shown in the following reaction: H2S(g)+3H2SO4→H2O(i)+4SO2(g) If a sample of 500 moles of hydrogen sulfide was reacted with excess concentrated sulfuric acid, how many moles of sulfur dioxide would be produced? ___moles SO2

2

Refer to the following balanced equation in which ammonia reacts with nitrogen monoxide to produce nitrogen and water.4NH3(g)+6NO(g)→5N2(g)+6H2O(l) How many moles of NH3 are necessary to produce 0.824 mol N2? ________mol NH3

.659

Given the following equation: 3Cl2 (g) + 8NH3 (g) → N2 (g) + 6NH4Cl (s) How many moles of NH3 are required to produce 12 moles of NH4Cl?

16 moles

Given the following equation: 2 KClO3 → 2 KCl + 3 O2 How many moles of O2 can be produced by letting 12 moles of KClO3 react?

18 moles

Oxygen and carbon monoxide react to form carbon dioxide as shown in the following reaction: O2 (g) + 2CO (g) → 2CO2 (g) If a sample of 70.0 g of carbon oxide was reacted completely with 32.0 g of oxygen, how many moles of carbon dioxide would be produced? ___ moles

2

Refer to the following balanced equation in which ammonia reacts with nitrogen monoxide to produce nitrogen and water.4NH3(g)+6NO(g)→5N2(g)+6H2O(l) How many moles of NO are required to completely react with 2.45 mol NH3? ________ mol NO

3.68

The formula for ethanol is CH3CH2OH. Choose the mole ratio of H to C in this molecule.

3:1

Magnesium sulfate reacts with sodium hydroxide to give magnesium hydroxide and sodium sulfate. if mole ratio of sodium sulfate to magnesium sulfate is 1:1, write the balance chemical equation for this reaction.

MgSO4+2NaOH→Mg(OH)2+Na2SO4

Ethane reacts with oxygen to produce water and carbon dioxide. What is the mole ratio of ethane to water?

Both A and B