Question

7. Calculate the ratio of atoms present in 4 g of magnesium and 4 g of iron.
(Atomic masses: Mg = 24, Fe = 56)​

Answer 1

Answer:

Explanation:

4g of magnesium = 4*24 = 96

4g of iron = 4*56 = 224

Answer 2

Answer:

12.046 x 10 to the power 19

Explanation:

Mole = Given mass / Molar mass .... (1)                                                                                  Molar mass = 12+1+106.5 = 119.5 (molecular mass of molecule given )

A/q to 1st equation

0.0239 gram / 119.5 = 0.0002 gram ( Value calculated  by calculator )

No. of particle = Mole x Avogadro

                        = 0.0002 gram x 6.022 x 10 to the power 23

                        = 12.046 x 10 to the power 19 ( Value calculated  by calculator )

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