Stoich Stumpers

 $Ca_{\left(s\right)}+N_{2\left(g\right)}→\ Ca_3N_{2\left(s\right)}$  

How many moles of Ca3N2 can be made from 14.3 moles of Ca? You will need to balance the equation first. 

Put in your answer with numbers only and to 1 decimal place. 

 $C_3H_8\ +\ O_2\ \longrightarrow\ CO_2\ +\ H_2O$  
What mass of oxygen gas is needed in order to fully react with 5.12 moles of C3H8? You will need to balance the equation first. 

Put your answer in with no units and to 1 decimal place. 

 $SO_2\ +\ H_2S\ \longrightarrow\ S\ +\ H_2O$  
What mass of sulfur dioxide is needed to fully react with 9.43 grams of hydrogen sulfide? You will need to balance the equation first. 

Put your answer in with no units and to 2 decimal places. 

You are a NASCAR pit crew member. Your driver has 20 laps left to go in the race and only 4.5 kg of fuel left in their tank. The race is very close and they might win. They radio in asking if they need to take a pit stop to refuel or to keep going and finish the race with the fuel they have left.

The formula for the fuel is C5H12 and it undergoes a combustion reaction in the engine of the car.

The car uses an average of 300 grams of oxygen for each lap.

Write a balanced equation for the combustion reaction and determine how many kg of fuel are required to finish the race.

Write your answer to two decimal places and do not include any units.

Continued from the last question.

Should your drive finish the race or should they come in for a pit stop to refuel?

• Go for it! Finish the race!

• Come back for a top off!

Balance the following equation in order to solve this problem. $FePO_4\ +\ Na_2SO_4\ \longrightarrow\ Fe_2\left(SO_4\right)_3\ +\ \ Na_3PO_4$ 
If 47.29 grams of Iron (III) phosphate react with excess sodium sulfate, but only 34.73 grams of iron (III) sulfate are actually produced, what is the percent yield for this reaction?

Type your answer in without units and to two decimal places.

Use the image of fake elements and polyatomic ions to complete this problem.

Solid Spillanese is added to a solution of aqueous sipium teate and a reaction takes place. Write a balanced equation for the reaction and then find out how many moles of spillanses is required to completely react with the 0.83 mols of sipium teate in the solution.

Write your answers without units and to two decimal places

Use the image of fake elements and polyatomic ions to complete this problem.

Catium metal and snugur react to form catium snugide. If I wanted to produce 25.0 grams of catium snugide, how many moles of snugur would I need?

Write your answers without units and to two decimal places

Use the image of the fake elements and polyatomic ions to complete this question.

Throwium Shadide reacts with Ohno (III) youdidnide to form Throwium youdidnide and Ohno (III) shadide. Write a balanced equation for this reaction and then find out how many grams of throwium youdidnide will be produced if 22.00 grams of Throwium shadide reacts with 74.00 grams of Ohno (III) youdidnide.

Write your answers without units and to two decimal places.