Question

Convert it into mole. Who knows the answer only that person can tell.​

Answer 1

Answer:

Explanation:

mass number× number of atoms in 1 mole

42.154×10²³×6.022×10²³

=253.85×10power 46

Answer 2

$1 \: mol \: = 6.022 \times {10}^{23} atoms\\\\No. \: of \: moles \: in \: 42.154 \times {10}^{23} atom \: of \: sodium \: \\= \frac{42.154 \times {10}^{23} }{6.022 \times {10}^{23} }\\\\= 7 \: moles$