PLEASE HELP A compound has the following percent composition: C=40%, H=6.67 %, 0= 53.3%. Its molecular weight is 300 g. Derive the
molecular formula.

Temperature is _related to the average kinetic energy of a gas. inversely directly not disproportionally

Sum of brother and sisters age is 26. four times the brothers age is subtracted from three times the sisters age, the difference is 8. what are the ages of the brother and sister?

The molecular weight of carbon dioxide, co2, is 44.00 amu, and the molecular weight of nitrous dioxide, no2, is 46.01 amu, so no2 diffuses co2