Question

How many atom of each type are present in 143g of washing soda?​

Answer 1

formula of washing soda Na2co3

wt=143

mwt is 23×2+12+16×3=106

mole is equal to wt/mwt

so 143÷106

no of atom is =mole ×N°

then

$(143 \div 106) \times (6.023 \times 10 {}^{23} )$

then you can solve it

here N°is Avogadro number

then no of atom is 8.125×10^23

i hope this will correct answer

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