A car engine produces 604 kJ of mechanical energy from fuel capable of producing 2416 kJ of energy. The efficiency of the engine is

The ph of carrots are 5.0 how it is classified a.acidic b.basic c.indicator d.neutral

Reduction is a reaction which results in a in electrons and a in positive charge of the atom or ion 1) a- loss 1) b- gain 2) a-increase 2) b-decrease

Which states of matter have particles that move independently of one another with very little attraction?