Mole and stoichiometry Review

Match it! Select the correct answer from the pull down...Good luck!

___Cu2S + ___O2 — ___Cu2O + ___SO2 What is the greatest mass of SO2 that can be produced from 15 mol Cu2S?

For the reaction ___HCl + ___NaOH — ___NaCl + ___H2O, which is the limiting reactant given 100.0 g of sodium hydroxide and 100.0 g of hydrochloric acid?

A three mole sample of K2S would have how many atoms of potassium?

___CaCO3 + ___HCl — ____CO2 + ___H2O this equation was used to find that only 100 g of CO2 was produced. If 200 g of HCl were used to begin the reaction, what is the percent yield?

if a sample contained 3.01 x 10 to the 23rd power atoms of tellurium, how many grams would this be?

What is the molecular mass of MgSO4?

Calcium hydroxide and hydrochloric acid react to form calcium chloride and water. If the chemicals are present in exactly the correct ratios to fully use all of the ingredients, how many moles of water can be formed from 5 moles of hydrochloric acid?

How many moles are in 75.0 grams of nitrogen gas?