According to reference table n, which pair of isotopes spontaneously decays?
(1) c-12 and n-14 (3) c-14 and n-14
(2) c-12 and n-16 (4) c-14 and n-16

Calculate the number of moles of ethane in 100 grams

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.

The term gas is limited to those substances that exist in the gaseous state at