38. How many formula units (f. un) will 88.36 g of magnesium sulfide (MgS) contain? a. 4.71 x 10-21 f. un of MgS
c. 9.43 x 1023 f. un of MgS
b. 8.28 x 10-21 f. un of MgS
d. 1.66 x 1024 f. un of MgS

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.

An atom with 7 protons, 6 neutrons, and 7 electrons has an atomic mass of amu. (enter a whole number.) numerical answers expected! answer for blank 1:

8. what happens to matter during a chemical reaction