Question

6g of an element x reacts with 16g of y element to give 0.5 mole of a compound xy. what is the molecular mass of xy?

Answer 1

Answer:

Molecular mass of xy= 44 is the answer, given in the attachment , have a look

Answer 2

The molecular mass of 'xy' is 44 grams.

Given,

Mass of element 'x' = 6 g

Mass of element 'y' = 16 g

Moles of element 'xy' = 0.5 mol

To Find,

The molecular mass of 'xy'

Solution,

The reaction is given as -

x + y → xy

Using the law of conservation of mass we can say that

Mass of 'xy' = Mass of 'x' + Mass of 'y'

Mass of 'xy' = 6 g + 16 g

Mass of 'xy' = 22 g

Mass of a molecule = Moles of molecule * Molecular mass

Let the molecular mass of 'xy' be 'm'

22 = 0.5 * m

m = $\frac{22}{0.5}$

m = $\frac{220}{5}$

m = 44 g

Hence, the molecular mass comes out to be 44 g.

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