First, there is no such thing as NiS2. NiS, perhaps, but not NiS2. However, the following answers are for the original question. I will show you how to do part a. The others are similar.
2NiS2+5O2--->2NiO+4SO2
How many mols O2 are in 8.95 g O2? That's mols = grams/molar mass = 8.95/32 = estimate 0.3 but you need to recalculate since this is an estimate.
Now look at the equation. 5 mols O2 will produce 4 moles SO2 so
0.3 mol O2 x (4 mols SO2/5 mols O2) = ? mols SO2 produced.
Consider the following reaction:
2NiS2+5O2--->2NiO+4SO2
a) How many moles of SO2 will be produced from 8.95 g of O2
b) How many grams of NiO would be formed from the reaction of 0.0125 mol of NiS2?
c) How many grams of O2 are needed to completely react with 3.74g of NiS2?
1 answer
1 answer