The density of an unknown sample is 3.0 g/ml. Assuming its volume is 5.0 ml, what is the mass of the sample?

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Volume is a measurement of how fast particles of a substance are moving

The equation below shows a chemical reaction. a + b + heat —> c + d according to the law of conservation of energy, which statement is true? a. the reactants absorb heat because they have less energy than the products. b. the products release heat because they have more energy than the reactants. c. the reactants generate heat because they have more energy than the products. d. the products require heat to form because they have less energy than the reactants.