Question

Define Avogadros number? convert two moles of magnesium sulphate into molecule present in the sample?​

Answer 1

Calculate the number of molecules present in 0.5 moles of magnesium oxide (MgO) . [Atomic weights : Mg = 24, O = 16 ]

Calculate the number of molecules present in 0.5 moles of magnesium oxide (MgO) . [Atomic weights : Mg = 24, O = 16 ]Top answer · 4 votes

Calculate the number of molecules present in 0.5 moles of magnesium oxide (MgO) . [Atomic weights : Mg = 24, O = 16 ]Top answer · 4 votes1 mole of MgO contains Avogadro's number of molecules which is 6.023 × 10^23 molecules.0.5 mole of MgO will contain 0.5 × 6.023 × 10^23 = 3.0115 ...

Answer 2

Answer:

Avogadros number

The number of atoms or molecules in one mole of a substance, equal to 6.023 × 1023.

By the Law of Avogrado we understand that 1 mol of a substance is equivalent to 6.02x10²³ molecules, therefore:

1 mol → 6.02*10²³ molecules

2 mol → y

\frac{1}{2} = \frac{6.02*10^{23}}{y}

2

1

=

y

6.02∗10

23

Product of extremes equals product of means:

1*y = 2*6.02*10^{23}1∗y=2∗6.02∗10

23

y = 12.04*10^{23}y=12.04∗10

23

\boxed{\boxed{y \approx1.2*10^{24}\:molecules\:of\:magnesium\:sulphate}}\end{array}}\qquad\quad\checkmark