Please answer all. I will vote.

a compound that contains C,H, and one O and has a molecular ion with an m/z value of 100 Express your answer as a molecular formula. Enter the elements in the order C,H, and O. a compound that contains C, H, and two Os and has a molecular ion with an m/z value of 116 Express your answer as a molecular formula. Enter the elements in the order C,H, and O. an amide that has a molecular ion with an m/z value of 129 Express your answer as a molecular formula. Enter the elements in the order C,H,N, and O