What change or changes in the state of a gas bring about each of the following effects? a. the number of impacts per unit time on a given container wall increases. b. the average energy of impact of molecules with the wall of the container decreases c. the average distance between gas molecules increases d. the average speed of molecules in the gas mixture is increased

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.