Question

Consider a zeppelin with an internal volume of 171029 m3. How many moles of hydrogen gas (H2) would occupy this volume? The density of hydrogen gas is 0.082 kg/m3.

Express your answer to two significant figures.

TIP: To report an answer in scientific notation, enter it using the format "2.3E4", which means "2.3 x 104" (without the quotation marks)

Answer 1

$v=\frac{m·\rho·1000}{M_{H_2}}=\frac{171029·0.082·1000}{2.0}=7.0E6$