8. Who proposed Law of Definite Proportions (or Law of Constant Composition)?
9. State Law of constant proportions. Explain with an example.
10. Show that water illustrates the law of constant proportions.
11. Hydrogen and oxygen combine in the ratio of 1:8 by mass to form water. What mass of
oxygen gas would be required to react completely with 3 g of hydrogen gas?
12. A 0.24 g sample of compound of oxygen and boron was found by analysis to contain 0.096
g of boron and 0.144 g of oxygen. Calculate the percentage composition of the compound
by weight.
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consult book only or Google it to get the answer
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