Which particles make up the nucleus of an atom?

Enzymes affect the reactions in living cells by changing the

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal.b. he is determining chemical properties that are sufficient to identify the metal.c. he is determining physical properties that are insufficient to identify the metal.d. he is determining chemical properties that are insufficient to identify the metal.

If 3 moles of a compound use 24 j of energy in a reaction, what is the a hreaction in j/mol?