(i) If 6g of Hydrogen combine with 48g of oxygen . How many grams of water is obtained ?
(ii) If Carbon and Oxygen combine in a definite ratio of 3:8 to form Carbon Dioxide. What mass of Oxygen
gas is required in Carbon Dioxide with 15 g of Carbon?
(iii) If 1.4 g of Calcium Oxide is formed by the complete decomposition of 2.5 g Calcium Carbonate, then
what amount of Carbon Dioxide will be formed ?
(iv) In Hydrogen Peroxide (H2O2),Find the proportion of Hydrogen and Oxygen by Mass.
(v) Magnesium and Oxygen combine in the ratio of 3 : 2 by mass to form Magnesium Oxide. What mass of
oxygen gas would be required to react completely with 24 g of magnesium ?
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Answer:
1) 54 g of water
2) 24 g oxygen is required
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