How much mass do 2.6 moles of gold contain

512.114 g

We are given;

we are required to calculate the mass of gold

Mass = Moles × molar mass

In this case;

Mass of Gold = 2.6 moles × 196.967 g/mol

                      = 512.1142 g

                      = 512.114 g

Thus, the mass of gold is 512.114 g

answer; i believe that the correct answer is (a) potassium(k)

plasma is the state of matter where the substance is ionized and has no definite shape or volume. the fact of being ionized makes the substance a good electrical conductor.