24. Sodium carbonate contains 43.4% Na 11.3% c and 45.3%O if the law of constant proportion is valid then weight of Na in 6 gm of Na2co3 obtained from other sources will be

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Q. A compound contains 43.4% sodium, 11.3% carbon and 45.3% oxygen.
Determine its empirical formula. (Atomic mass of

N a = 23 C = 12, O = 16

Q. A substance on analysis gave the following percentage composition:

N a = 43.4 %, C = 11.3 %

and

O = 45.3 %

. Calculate the empirical weight (Atomic weight in amu of

N a = 23, C = 12, O = 16

Q. A sample of calcium carbonate

(C a C O_{3})

has the percentage composition as given:

C a = 40 %, C = 12 %, O = 48 %

If the law of constant proportions is true, then the weight of calcium in

4

g of a sample of calcium carbonate obtained from another source will be :

If a compound is made of sodium, carbon, and oxygen and their % composition are 43.4%, 11.3%, 45.3% respectively. What is the chemical formula of the compound?

Q. A sample of calcium carbonate

(C a C O_{3})

has the following percentage composition:
Ca = 40%; C = 12%; O = 48%.
If the law of constant proportions is true, then the weight of calcium in 4 g of a sample of calcium carbonate from another source will be ?

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