What is the predominant use of oil in the United States? electricity production

transportation

industrial use

residential use

The United States continues to lead auto ownership per capita for the next century, and refined motor fuel becomes the country's predominant use of oil.

Industrial use :D

Explanation:

Please consider marking me brainlet :)

1. 1 mole of anything contains 6.022x10^23 pieces  

d  

2. a  

3. c, number  

5. 1.24x10^24atoms / 6.022x10^23atoms/mole = 2moles h2 atoms  

6. fe2br3 mass = 2moles x mass fe + 3 moles x mass br  

molar mass = grams / number of moles = g/mole  

to find moles = g / molar mass  

to find mass = g = molar mass / moles