Read the given chemical reaction. C2H6 + O2 → CO2 + H2O

How many moles of H2O are produced during the complete combustion of 6.0 moles of C2H6? (Show your calculations for full credit. Correct answers will only receive partial credit.)

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. 

1.75 is the weight of one medium egg