A compound has an empirical formula of CH,0. What is its molecular formula, if its
molecular mass is 90 g/mol?
(C=12.01 amu, H=1.008 amu, O=16.00 amu)

Determine the mass of fuel required for the expected energy consumption in the united states for the next ten years. energy use per person per year in the united states = 3.5 x 1011joules base calculations on current population of 310,000,000.

Iknow #2 is d. i just need to know why

You have 125g of a certain seasoning and are told that it contains 76.0 g of salt what is the percentage of salt by mass in this seasoning