Compound Y contains carbon, hydrogen, and nitrogen. Combustion of 0.250 g of Y produces 0.344 g of water, H2O and 0.558 g of carbon dioxide, CO2. Determine ... (a) the empirical formula for Y
(b) the molar mass of Y if the molecular formula is the same as the empirical formula
(c) the number of hydrogen atoms present in the above sample Y​

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?

What are the first two quantum numbers for the electrons located in subshell 4d? what are the first three quantum numbers for the electrons located in subshell 2s? how many electrons can be held in a sublevel l = 3? how many electrons can be held in the energy level n = 4? how many electrons in an atom can share the quantum numbers n = 4 and l = 3?

Aroom with dimensions 7.00m×8.00m×2.50m is to be filled with pure oxygen at 22.0∘c and 1.00 atm. the molar mass of oxygen is 32.0 g/mol. how many moles noxygen of oxygen are required to fill the room? what is the mass moxygen of this oxygen?