If the volume of a sample of gas is increased 5 times the original volume while the temperature is held constant, what happens to the pressure of the gas?
a. it decreases by 1/5.
b. it increases by 1/5.
c. it increases 5 times the original pressure.
d. it stays the same.

Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.

Achemist wants to extract copper metal from copper chloride solution. the chemist places 0.50 grams of aluminum foil in a solution containing 0.75 grams of copper (ii) chloride. a single replacement reaction takes place. (ii) chloride. a single replacement reaction takes place. which statement explains the maximum amount of copper that the chemist can extract using this reaction? a) approximately 0.36 grams, because copper (ii) chloride acts as a limiting reactant b) approximately 1.8 grams, because copper (ii) chloride acts as a limiting reactant c) approximately 0.36 grams, because aluminum acts as a limiting reactant d) approximately 1.8 grams, because aluminum acts as a limiting reactant

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