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Chemistry
Chemistry
Problem
The atomic masses of two elements A and B are 30 and 90 respectively. If 'a' g of element A contains 'b' atoms, then number of atoms of B in 2a g is : a.
2
b
/
3
2b/3
2
b
/3
b.
b
/
3
b/3
b
/3
c.
b
/
4
b/4
b
/4
d.
b
/
2
b/2
b
/2
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