The molar mass of MgI2 is a. The molar mass of Mg2 is the sum of the masses of 1 mol of Mg and 2 mol of I.
b. the sum of the masses of 1 mol of Mg and 1 mol of I.
c. the sum of the masses of 2 mol of Mg and 2 mol of I.
d. impossible to calculate.

Adeuteron, 21h, is the nucleus of a hydrogen isotope and consists of one proton and one neutron. the plasma of deuterons in a nuclear fusion reactor must be heated to about 3.02×108 k . what is the rms speed of the deuterons? express your answer using two significant figures.

Which samples do the atoms have the least kinetic energy

Which radioisotope is used to date fossils? a. oxygen-16 b. carbon-14 c. uranium-238 d. carbon-12