# Problem: Molecular hydrogen is used as the “liquid fuel” (liquefied hydrogen) for rockets. How much water is generated from 1000 gallons of liquefied hydrogen? (1 gallon = 3.80 L. The density of liquefied hydrogen at 20 K is 71 g/L.) a. 4860 kgb. 2430 kgc. 1220 kgd. 135 kge. 17 kg

###### FREE Expert Solution
83% (489 ratings)
###### Problem Details

Molecular hydrogen is used as the “liquid fuel” (liquefied hydrogen) for rockets. How much water is generated from 1000 gallons of liquefied hydrogen? (1 gallon = 3.80 L. The density of liquefied hydrogen at 20 K is 71 g/L.)

a. 4860 kg

b. 2430 kg

c. 1220 kg

d. 135 kg

e. 17 kg

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Stoichiometry concept. You can view video lessons to learn Stoichiometry. Or if you need more Stoichiometry practice, you can also practice Stoichiometry practice problems.

What is the difficulty of this problem?

Our tutors rated the difficulty ofMolecular hydrogen is used as the “liquid fuel” (liquefied h...as medium difficulty.

How long does this problem take to solve?

Our expert Chemistry tutor, Jules took 3 minutes and 45 seconds to solve this problem. You can follow their steps in the video explanation above.