An unknown compound contains only carbon, hydrogen, and oxygen (cxhyoz). combustion of 3.00 g of this compound produced 4.40 g of carbon dioxide and 1.80 g of water. how many moles of carbon, c, were in the original sample?

0.100 moles

1 mole of CO2 = 44 g

1 mole of CO2 = 12 g of Carbon

Mass of carbon in the original sample;

 = (4.4 × 12)/44

 = 1.2 g

Moles of carbon = 1.2 /12

                           = 0.100 Moles  

Moles C in the original sample = 0.100

the answer is 1260

you spend 7 hours in school for 1 school day with 5 school days in 1 school week with 36 school weeks in a school year.

7*5*36= 1260 it's all about multiplying

the maximum mass of nh3 is nh3 in grams