E-PolyLearning

1. How many grams of NaCl represent 1 mole?
a. 23
b. 35.5
c. 58.5
d. 69.5
View Answer Report Discuss 50-50!
Answer: (c).58.5

2. How many atoms of carbon represent 1.5 mole?
a. 6.022 X 10²³
b. 1.2044 X 10²³
c. 3.011 X 10²³
d. 9.033 X 10²³
View Answer Report Discuss 50-50!
Answer: (d).9.033 X 10²³

3. Calculate the number of moles in 42 grams of NaHCO₃?
a. 0.5
b. 1
c. 1.5
d. 2
View Answer Report Discuss 50-50!
Answer: (a).0.5

4. Calculate the number of moles in 369 grams of Ca°Cl₂?
a. 1
b. 2
c. 3
d. 4
View Answer Report Discuss 50-50!
Answer: (c).3

5. 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
View Answer Report Discuss 50-50!
Answer: (b).40 grams of oxygen

Page 1 of 19