Question

How much atmos are present in 60gm of CuSO4.5H20​

Answer 1

mass of CuSO4.5H2O =. 60gm

molar mass of CuSO4.5H2O =. 159.6g/mol = 160 g/mol

${ \boxed{ \bold{ \red{no. \: of \: mole = \frac{given \: mass}{molar \: mass}}}}}$

number of mole of CuSO4.5H2O = 60g / 160 g per mole

✴️. number of mole of CuSO4.5H2O = 3/8moles

number of molecules of CuSO4.5H2O = no. of moles × avagadro number

${ \red{no. \: of \: molecules = \frac{3}{8} mole \times 6.022 \times {10}^{23} \frac{molecules}{mole} }}$

${ \bold{ no. \: of \: molecules = \frac{18.066 \times {10}^{23} }{8}molecules}}$

1 molecule of CuSO4.5H2O contains ( 1+1+4+10+5) = 24 atoms

therefore , total number of atoms in 60 gm of CuSO4.5H2O

${ \bold{ = \frac{1.8066 \times {10}^{23} molecule}{8} \times {24 \: \frac{atoms}{molecule}}} }$

${ \bold{ = 1.8066 \times {10}^{23} \times 3 \: atoms}}$

hence,

${ \boxed{ \bold{ \red{total \: no. \: of \: atoms = 5.4198 \times {10}^{23}atoms}}}}$