A 35.0 g piece of metal wire is heated, and the temperature changes from 21 °C to 52 °C. The specific heat of the metal is 0.900 J/g.°C. How much energy was required to heat the metal?

Iknow the answer to 13 is b and 14 is d. i just need to know why the correct answers are correct

In the following redox reaction which is the oxidizing agent and which is the reducing agent? alcl3 + na nacl + al

Which describes fat? a: a carbohydrate that produces energy b: a nucleic acid that directs cell function c: a lipid that stores energy d: a protein that speeds up a chemical reaction