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Problem: 0.1156 g CxHyNz reacts with oxygen, O2, to give 0.1638 g CO2, 0.1676 g H2O, and N2. Find the empirical formula of the organic compound.

CxHyNz + O2 → CO2 + H2O + N2

To determine the empirical formula you should know how much carbon, hydrogen, & nitrogen are each present in the sample. Follow the steps: Use dimensional analyses here.

1. Determine how much C is in CO2 then convert to mole.

2. Determine how much H is in H2O then convert to mole.

3. How do you think you can determine the amount of oxygen?

4. How do you think you can determine the amount of nitrogen?

Mass is the amount of matter in an object.  weight is the measurement of the pull of gravity on an object.  say for example, you travel to the moon which has a different gravitational field compared to the gravitational field of earth. (gravitational fields: earth = 1, moon = 0.165)  now when you are on the moon, the pull of gravity on you is different than on the earth. and as weight is the measurement of the pull of gravity on an object, that means yes, your weight can and will change on the moon.  however, on the moon, on earth or even on jupiter, the amount of mass inside of you remains the same. meaning your physical mass remains constant.  in conclusion it is possible for your weight to change as your mass remains constant. 

Niye yedi puan mal oglu mal

Yeah, but what are you trying to ask?