# Assorted Stoichiometry and Theoretical Yield Problems

1) What is the weight percentage of C in C6H12O6? Report your answer to 3 significant figures.

2) What is the molar mass of TiCl4? Report your answer to two decimal places.

3) 20.0g of each Fe2O3 and Al are mixed together and react according to the following equation. What is the theoretical yeild of Fe? Report your answer in grams, to 3 significant figures.

Fe2O3(s)+ 2Al(2)----Al2O3(s)+2Fe(s)

4) Write a balanced equation for the reaction between lead nitrate and sodium sulfate, in solution.

5) What is the molarity of a 1.30L solution containing 6.00g of NaCN? Report your answer to the correct number of significant figures.

https://brainmass.com/chemistry/composition-stoichiometry/assorted-stoichiometry-theoretical-yield-problems-154283

#### Solution Preview

1) What is the weight percentage of C in C6H12O6? Report your answer to 3 significant figures.

Trailing zeroes are significant if there is a decimal point in the number.

2) What is the molar mass of TiCl4? Report your answer to two decimal places.

3) 20.0g of each Fe2O3 and Al are mixed together and react according to the following equation. What is the theoretical yield of Fe? Report your answer in grams, to 3 significant figures.

Fe2O3(s)+ 2Al(2)----Al2O3(s)+2Fe(s)

First, figure out which is limiting. To obtain the limiting reagent, find the number of moles of each reactant and divide each by the ...

#### Solution Summary

Stoichiometry and theoretical yield problems are solved.