Moles and Molar Mass

Practice Questions

AP Chemistry › Moles and Molar Mass

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1

What is the mass of $5.34\times10^{15}$ particles of $C_2H_6$ ?

2

How many hydrogen atoms are present in 500 mL of water at room temperature?

$\rho_{\text{water}}=1\frac{g}{mL}$

3

What is the molar mass of ?

4

A chemist has $4.37*10^{-3}g$ of $CH_3CH_2OH$ .

How many molecules of $CH_3CH_2OH$ does she have?

5

What is the molar mass of ammonium hydroxide?

6

A ring of imitation jewelry is coated with $1.00: \mu g$ of silver which is equivalent to:

7

What is the molar mass of oxalic acid?

8

How many molecules are there in of $BaSO_{4}$ ?

9

How many hydrogen atoms are in 46.3 g of ethanol, ?

10

What is the percent by mass of the anion in lithium iodate, $LiIO_{4}$ ?

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