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14 January, 15:28

1. How many hydrogen atoms are in 5 molecules of isopropyl alcohol, C3H7O

a. 5 x (6.02 x 10^23)

b. 5

c. 35

d. 35 x (6.02 x 10^23)

2. How many molecules are in 2.10 mol CO2?

a. 2.53 x 10^24 molecules

b. 3.79 x 10^24 molecules

c. 3.49 x 10^-24 molecules

d. 1.26 x 10^24 molecules

3. What is the molar mass of AuCl3?

a. 96 g

b. 130 g

c. 232.5 g

d. 303.6 g

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Answers (1)
  1. 14 January, 16:43
    0
    1. c. 35

    2. d. 1.26 x 10^24 molecules

    3. d. 303.6 g
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