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What is the % composition of nitrogen by...

What is the % composition of nitrogen by weight in air ?

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MOTION-MOLE CONCEPT-EXERCISE - 3
  1. 1120 mL of ozonised oxygen at S.T.P. weigh 1.76 g. Calculate the volum...

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  2. The composition of air is approximately 80% N(2) " and " 20% O(2) by m...

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  3. What is the % composition of nitrogen by weight in air ?

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  4. Given the following empirical formulae and molecular weights, compute ...

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  5. A 5.5 gm sample of an organic compound gave on quantitative analysis 1...

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  6. The elements A and B form a compound that contains 60% A and 40% B by ...

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  7. A sample of chalk contains clay as impurity. The clay impurity loses 1...

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  8. A sample of clay was partially dried. It then contained 50% slica and ...

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  9. In an organic compound of molar mass greater than 100 containing only ...

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  10. The simplest formula of a compound containing 50% of an element X (ato...

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  11. The sodium salt of methyul orange has 7% sodium. What is the minimum m...

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  12. In the following equation : FeS(2)+O(2) rarr Fe(2)O(3)+SO(2) Calcu...

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  13. Equal weights of Zn metal and iodine are mixed together and I(1) is co...

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  14. Li metal is one of the few substances that reacts directly with molecu...

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  15. Carbon disulphide CS(2) can be made from be product SO(2). The overall...

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  16. 1.0 mole of Fe reacts completely with 0.65 mole of O(2) to give a mixt...

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  17. One mole of potassium chlorate is thermally decomposed and excess of a...

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  18. How many moles of potassium chlorate need to be heated to produce 11.2...

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  19. When x grams of carbon are heated with y grams of oxygen in a closed v...

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  20. If a piece of iron gains 10% of its weight due to partial rusting into...

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