1. A 5.37 gram piece of metal has a temperature of 22.0°C. If the metal piece loses 31.5 joules of energy as it cools to 15.5°C, what is the metal substance? WITH WORK!

Adrop of acetone (nail polish remover) has a mass of 35 mg and a density of 0.788 g/cm3. what is its volume in cubic centimeters?

Which of the following signs of a chemical reaction are observed in the reaction of potassium with water? precipitate formed temperature change smell produced gas produced color change

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