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On analysis it was found that the black ...

On analysis it was found that the black oxide of copper and red oxide of copper contain 80% and 89% of copper respectively. Show that this data is in accordance with law of multiple proportions.

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To show that the data regarding the black oxide of copper and red oxide of copper is in accordance with the law of multiple proportions, we will follow these steps: ### Step 1: Determine the percentage of oxygen in each oxide. - For black oxide of copper: - Percentage of copper = 80% - Therefore, percentage of oxygen = 100% - 80% = 20% - For red oxide of copper: ...
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An element forms two oxides containing 50% and 40% of the element by mass. Prove that the results are in agreement with the law of multiple proportions.

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Sulphur and oxygen are known to form two compounds. The sulphur content in one of these is 51 % while in the other is 41 %. Show that this data is in agreement with the law of multiple proportions.

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metal combines with oxygen to form two oxides, having the following composition: (i) 0.398 g of the first metal oxide contains 0.318g of metal. (ii) 0.716 g of the second oxide contains 0.636g of the metal. Show that the above data agrees with the law of multiple proportions.

Two oxides of a metal contains 50% and 40% of a metal respectively .The formula of the first oxide is MO. Then the formula of the second oxide is :-

Hydrogen and oxygen are known to from two compounds. The hydrogen content in one one of these is 5.93% while in the other it is 11.2%. Show that this data illustrates the law of multiple proportions.

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AAKASH INSTITUTE ENGLISH-SOME BASIC CONCEPTS OF CHEMISTRY -TRY YOURSELF
  1. 2.75 g of cupric oxide was reduced by heating in a current of hydrogen...

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  2. 12.976 g of lead combines with 2.004 g of oxygen to form PbO(2). PbO(2...

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  3. On analysis it was found that the black oxide of copper and red oxide ...

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  4. Sulphur and oxygen are known to form two compounds. The sulphur conten...

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  5. Boron has two isotopes, B-10 and B-11. The average atomic mass of boro...

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  6. Carbon found nature as a mixture of C-12 and C-13. The average atomic ...

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  7. Calculate the molar mass of the following: (i) H(2)O (ii) CO(2) (i...

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  8. Find the molecular mass of glucose (C6H12O6) and calculate the mass of...

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  9. Calculate mass of one atom of calcium in gram.

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  10. Calculate mass of one molecule of sulphur dioxide (SO(2)) in gram.

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  11. Calculate number of atoms in 0.5 mole of oxygen atoms.

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  12. Calculate number of atoms in 0.2 mole of oxygen atoms.

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  13. Calculate percentage of sulphur in sulphuric acid (H(2)SO(4)).

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  14. Calculate percentage of carbon in ethanol (C(2)H(5)OH).

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  15. A substance on analysis, gave the following percentage composition : N...

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  16. A compound gave the following data: C = 57.82%,0 = 38.58% and the r...

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  17. Calculate the amount of water (g) produced by the combustion of 16 g o...

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  18. How many moles of methane are required to produce 22g CO(2) (g) after ...

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  19. 50.0 kg of N(2) (g) and 10.0 kg of H(2) (g) are mixed to produce NH(3)...

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  20. 80 g of H(2) is reacted with 80 g of O(2) to form water. Find out the ...

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