The Space Shuttle Uses Liquid Hydrogen and Liquid Oxygen to Produce

question 112

Multiple Choice

The space shuttle uses liquid hydrogen and liquid oxygen to produce thrust for liftoff in the following reaction: 2 H₂(l) + O₂( ) $\to$ 2 H₂O(g)
If the liquid oxygen supply is set to provide 420 kg/s during a launch,what does the rate of liquid hydrogen supply need to be in kilograms per second?

• A)840 kg/s
• B)210 kg/s
• C)106 kg/s
• D)52.9 kg/s
• E)63.4 kg/s

---

Definitions:

Retail Selling Price

The price at which goods or services are sold to the final consumer, including any markups applied by retailers.

Profit

The financial gain obtained when the revenue generated from a business activity exceeds the expenses, costs, and taxes associated with it.

Wholesale Price

The cost at which goods are sold to retailers by manufacturers or distributors before any retail markup.

Retail Price

The cost at which an item is sold to the general public by retailers.