Which of the following statements about hydrogen is true?

A. A hydrogen atom is one proton and two electrons.
B. Hydrogen is one of the heaviest elements known and is full of energy.
C. Fossil fuels are combinations of carbon and hydrogen.
D. Hydrogen is produced in a fuel cell when water is broken down into its basic elements.


C. Fossil fuels are combinations of carbon and hydrogen.

Trades & Technology

You might also like to view...

?When a mass suspended from a test sample causes the sample to change shape over a period of time, the strain is called ____.     

A. ?fatigue B. ?stress C. ?tension D. ?creep

Trades & Technology

What is problematic with single zone, constant volume reheat systems? Select all that apply.

A) They waste energy and are banned by most codes. B) They can only cool; heating needs to be a separate system. C) Rooms are stuffy due to inherently poor air flow. D) They cannot provide temperature control for multiple spaces.

Trades & Technology

The wholesaler is a link between the ____________________ of any type of agricultural goods and the retail store where the goods are sold

Fill in the blank(s) with correct word

Trades & Technology

How is the aging animal different in its general nutrient use?

What will be an ideal response?

Trades & Technology