PLZ HELP ASAP Aluminum oxide (Al2O3) is extracted from bauxite and provides the major source of aluminum in the world. What mass of pure aluminum can be extracted from 655 g aluminum oxide?
A. 262 g
B. 309 g
C. 346 g
D. 368 g

What is the result of multiplying (2.5 × 1010) × (2.0 × 10-7)? a. 5.0 × 103 b. 5.0 × 10-3 c. 5.0 × 1017 d. 5.0 × 10-17

A5 mole sample of liquid acetone is converted to a gas at 75.0°c. if 628 j are required to raise the temperature of the liquid to the boiling point, 15.600 kj are required to evaporate the liquid, and 712 j are required to raise the final temperature to 75.0°c, what is the total energy required for the conversion?

If you try to move a piano and are unable to move it, did you perform any work in the scientific sense of the word? yes no correct anwser get brainliest