The molecules in 0.0124 mol of CH2O: = 0.0746 x 10²³ molecules
Step-by-step explanation:
Number of molecules can be calculated as ratio of given mass to molecular mass x Avogadro's number .
That is ;
Number of molecules = Given mass /molecular mass x Avogadro's number .
Number of molecules = given mass / molecular mass x 6.023 x 10²³
In the above asked question :
The moles of CH₂O = 0.0124 moles
The molecular mass = CH₂O
(atomic mass of C + +atomic mass of hydrogen + atomic mass of O
that is :
12 +1x 2+16=30
Now, substituting in formula, we get
number of molecules = 0.0124mole x Av. number '
Number of molecules = 0.0124 x 6.022 x 10²³
= 0.0746 x 10²³ molecules