Moles, Density & Concentration Questions And Answers.


1.How many grams of NaCl represent 1 mole ?
A. 23
B. 35.5
C. 58.5
D. 69.5

2.Calculate the number of moles in 42 grams of NaHCO3?
A. 0.5
B. 1
C. 1.5
D. 2

3.Calculate the number of moles in 369 grams of CaOCl2?
A. 1
B. 2
C. 3
D. 4

4.Which of the following has the same number of moles as in 398 grams of CuSO4 ?
A. 2 grams of hydrogen
B. 40 grams of oxygen
C. 35 grams of nitrogen
D. 58.5 grams of Sodium chloride

5.What are the number of moles of Hydrogen in 158 grams of Ammonium Bicarbonate ?
A. 5
B. 10
C. 15
D. 20

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