Acertain atom has 22 protons and 19 electrons. this atom loses an electron. the net charge on the atom is now . if this same atom with 22 protons and 19 electrons were to gain 3 electrons, the net charge on the atom would be .

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.

How do dying stars contribute to the formation of planets

Light waves are as they pass through the