Stoichiometry Remediation 2

Anna thinks that the red line represents the Excess reactant. Is she correct? Explain your reasoning.

Joselin thinks that $N_2$   represents the Excess reactant. Is she correct? Explain your reasoning.

Which is the limiting reactant in this graph? Explain.

Which is the excess reactant in this graph? Explain.

Which is the product in this graph? Explain.

1.9 A chemist uses 1000g of reactants including 400g of Hydrogen gas and 600g of Oxygen gas. He calculated that 950g of water should be produced but only 550g was made in the experiment.

What is the percent yield of water?

If an experiment could have produced 50.0 grams of CO₂ but only produced 32.7 grams, what is the percent yield?

Cu + 2 AgNO₃ → 2 Ag + Cu(NO₃)₂

Cynthia calculated that 169.74 grams of Ag can be produced when 50.0 grams of Cu reacts with AgNO₃. If 150.8 grams of Ag are collected, what is the percent yield?

What is the percent composition of each element in Al₂(SO₄)₃ ?

An oxide of chromium is found to have the following % composition: 68.4 % Cr and 31.6 % O. Determine this compound's empirical formula.

The percent composition of a compound was found to be 63.5 % silver, 8.2 % nitrogen, and 28.3 % oxygen. Determine the compound's empirical formula.

A compound has C₁₀H₇O₂ as its empirical formula It has a molecular weight of 318.31 g/mol. What is the molecular formula for this compound?

A compound with an empirical formula of C₂OH₄ and a molar mass of 88 grams per mole. Find the molecular formula of the compound.

A compound with a molar mass of 544.0 g/mol is made up of 26.5 grams Carbon, 2.94 grams Hydrogen, and 70.6 grams Oxygen. What is its empirical and molecular formula?