How many liters of oxygen gas, at standard temperature and pressure, will react with 35.4 grams of calcium metal? Show all of the work used to solve this problem.

2 Ca + O2 yields 2 CaO

Question

How many liters of oxygen gas, at standard temperature and pressure, will react with 35.4 grams of calcium metal? Show all of the work used to solve this problem. 

2 Ca + O2 yields 2 CaO

anonymous · Answer

2mol Ca react with 1 mol O2
Molar mass Ca = 40.08g/mol 
35.4g = 35.4/40.08 = 0.884 mol Ca
This will react with 0.442 mol O2 

At STP, 1mol O2 = 22.4 litres
0.442 mol O2 = 22.4*0.442 = 9.9 litres.

anonymous · Answer

No.. This is not a practice exam. This is a module quiz from FLVS and it's cheating if you use this answer. Plus it has a obvious mistake in it. Mr. Carlyle 
FLVS Chemistry Instructor 

This question is a violation of the OpenStudy Guidelines. The question is from an online school plus a violation by solicitation for members to unknowingly assist them cheating on an exam. 30653065chem30653065