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| 1. |
3.0 g of carbon is burnt in 8.00 g oxygen, 11.00n dioxide is produced. What mass of carbon dioxide4S |
| Answer» <p>C + O2→ CO2</p><p>3 g 8 g 11 g</p><p>Total mass of reactants = mass of C + mass of O = 3+8=11g</p><p>Total mass of reactants = total mass of products</p><p>Hence, the law of conservation of mass is proved.</p><p>Further, it also shows carbon dioxide contains carbon and oxygen in a fixed ratio by mass, which is 3 : 8. Thus it also proves the law of constant proportions. 3 g of carbon must also combine with 8 g of oxygen only. This mean that (50 – 8) = 42 g of oxygen will remain unreacted</p> | |