Two or more elements bonded/combined together chemically form

a. nuclear freeze
b. a compound
c. a mixture
d. chemical equation

Given the table below, what is the chemical formula for a compound between rb and the nitrate ion no3 -1? nitrate ion no3 -1 phosphate po4 -3 sulfate so4 -2 acetate c2h3o2 -1 ammonium nh4 +1 chromate cro4 -2 carbonate co3 -2 dichromate cr2o7 -2 permanganate mno4 -1 sulfite so3 -2 rbno3 rb2no3 rb(no3)2 rb2(no3)3

The compound formed from 2 atoms of hydrogen and one atom of oxygen is

What is the force of an object when it landed(sitting in the ground)