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Percentage of copper and oxygen in sampl...

Percentage of copper and oxygen in samples of CuO obtained by different methods were found to be same. This proves the law of

A

Constant proportions

B

Reciprocal proportion

C

Multiple proportion

D

Conservation of mass

Text Solution

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The correct Answer is:
A
Law of constant proportions
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NARAYNA-SOME BASIC CONCEPTS IN CHEMISTRY STOICHIOMETRY (PART-I)-All Questions
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  2. Add 6.65 10^(4) and 8.95'10^(3).

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  3. Report tha answer to correct singificant figures in 2.5' 1.25

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  8. Mass of one hydrogen atom

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  9. No of atoms in 4 gram of calcium

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  10. No of molecules in 2.2 grams of Co(2)

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  11. The volume occupied by 35.5g of CI(2) at S.T.P.

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  15. Calculate weight of 3.011 xx 10^(23) molecules of SO(2)?

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  16. Calculate the number of molecules in 1120 ml of hydrogen at STP?

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  19. H(2)SO(4)+NaOH rarr NaHSO(4)+H(2)O In this equation the equivalent wei...

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  21. Mg(OH)(2)+HCI rarr Mg(OH)CI +H(2)O In this reaction, the equivalent ...

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