Chemistry I

 

Week 1: Stoichiometry Warm Up!

Watch the following video and take notes as best as you can!

Step by Step Stochiometry Practice

Here is a mole map for extra help!

Mole Map

After completing the video answer the following questions:

 

 

2  Na(NO3)  +  Ca(CO3à  Na2(CO3)  +  Ca(NO3)2

  1. How many formula units of sodium nitrate will react with 25.5 g of calcium carbonate to product sodium carbonate and calcium nitrate according to the following reaction?  (3 sig figs!)         

 

 

2  H2à  2  H2  +  O2

      2.   What volume of oxygen is produced at STP when 3.4 x 1024 molecules of water is decomposed according to the following reaction? (2 sig figs!)

 

      

6  K  +  N2  à  2  K3N

      3.    How many liters of nitrogen gas are needed to react with 70 g of potassium at STP in order to produce potassium nitride according to the following reaction? (1 sig figs!)

 

 

_____  Al(OH)3     à     _____  Al2O3     +     _____  H2O

      4.   What mass of aluminum hydroxide are needed to decompose in order to produce 83.0 L of water at STP according to the following equation? (3 sig figs!)

 

 

 

_____  C3H8     +     _____  O2     à     _____  H2O     +     _____CO2

      5.   How many liters of propane(C3H8) are needed to react with 17.9 liters of oxygen at STP in order to produce water and carbon dioxide? (3 sig figs!)

 

 

 

  1.   How many grams of potassium chloride are produced when 1.39 x 1023 molecules of NaCl reacts with pottasium according to the following equation? (3 sig figs!) ( Hint: Single displacement reaction!)