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Standard VIII

Chemistry

Need for Balancing

If the masses...

Question

If the masses of Cr and O are in ratio 13:12 in CrO3 then the ratio if O that combinrs with the same mass of Cr in Cr2O3 and Cr2 O7 is ?

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Similar questions

Q. If the masses of

C r

and

O

are in the ratio

13 : 12

C r O_{3}

, then the ratio of

O

that combines with the same mass of Cr in

{C r}_{2} O_{3}

and

{C r}_{2} O_{3}

is:

Q. The percentage composition of

C r

K_{2} {C r}_{2} O_{7}

is (Given molar mass of

K_{2} {C r}_{2} O_{7} = 294.0 g

m o l

)

"If two different elements combine separately with the same weight of a third element, the ratio of the masses in which they do so are either the same or a simple multiple of the mass ratio in which they combine." is :

Q. Two elements

(X) a n d (Y)

combine to form compound

(A) a n d (B)

. For the fixed mass of

(X)

, masses of

(Y)

combine are in

3 : 7

ratio. If in

(A)

4 g

(X)

combine with

12 g

(Y)

, then in

(B)

8 g

(X)

will combine with _______

g

(Y)

Q. Two elements A and B combine to form compounds X and Y. For a fixed mass of A, the masses of B that combine to form the compounds X and Y are in the ratio

3 : 7

. If in the compound X,

4 g

of A combines with

12 g

of B, then in compound Y,

8 g

of A will combine with _______

g

of B.

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