Question

Two elements x and y combine to form the compound x2y3. write the molecular formula of the compound formed when x combines chloride ion and y combine with Na ion
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Answer 1

Explanation:

=Mole

mw

5g

=0.05⇒mw=100

x+2y=100...(i)

6×10

23

No.ofmolecules

=

mw

mass

eq(1)×2

6.023×10

23

3.011×10

23

=

mw

85

⇒mw=170

2x+3y=170....(ii)

On solving equation (i) and (ii), we get-

2x+4y=200

2x+3y=170

y=30

2×x+3×30=170

2x=170−90

2x=80

x=40