Question

A compound contains 10 g of phosphorus. If atomic mass of
phosphorus is 31, the molecular mass of the compound having one
phosphorus atom per molecule is
​

Answer 1

Answer:

10

−2

% of phosphorous means

100

10

−2

suppose molecular mass of compound =x

then 10

−2

% of x=31 (given)

100

10

−2

×x=31 x=31×10

5

Answer 2

3.1×10 power5

% of phosphorous means

100

10

−2

suppose molecular mass of compound =x

then 10

−2

% of x=31 (given)

100

10

−2

×x=31 x=31×10

5