JUU UJUNIJI J, 2015
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Question 21: Following are information for valuation of closing stock as on 31.3.2075:
Stock taken on 26.03.2075 was Rs. 1,24,870. Total purchases between stock taken and the year end was Rs. 70,250.
Manufacturing expenses during the period was Rs. 12,350. Total sales during the period were Rs. 2,00,000. Profit
margin on sales is 25% on cost.​

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. 

The net force is 100

Oxygen= 88ghydrogen= 12g