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8. When 22.0 g NaCl and 21.0 g H2SO4 are mixed and react according to the equation below, which is the limiting reagent?
2NaCl + H2SO4  Na2SO4 + 2HCl
A. NaCl
B. H2SO4
C. Na2SO4
D. HCl
E. No reagent is limiting.

9. Hydrochloric acid can be prepared by the following reaction:

2NaCl(s) + H2SO4(aq)  2HCl(g) + Na2SO4(s)

How many grams of HCl can be prepared from 2.00 mol H2SO4 and 150 g NaCl?

A. 7.30 g
B. 93.5 g
C. 146 g
D. 150 g
E. 196 g



10. What is the theoretical yield of chromium that can be produced by the reaction of 40.0 g of Cr2O3 with 8.00 g of aluminum according to the chemical equation below?
2Al + Cr2O3  Al2O3 + 2Cr
A. 7.7 g
B. 15.4 g
C. 27.3 g
D. 30.8 g
E. 49.9 g