Question

Calculate mass of 12.044into 10 molecules of oxgyen

Answer 1

No. of moles = No. of molecules/ Avogadro No.

So. 12.044 × 10^23/ 6.022 × 10^23 = n
So, n = 2

No. of moles = Weight / Mass
= w / 32

2 = w/32

w = 64 grams

Hope, this helps

Answer 2

Answer:

$6.022*10^{23}$ molecules of oxygen atom weighs=16 g

$12.044*10^{25}$ molecules of oxygen atom=$\frac{16}{6.022*10^{23} } *12.044*10^{25}$

=$32*10^{2} g$