How many molecules are in 0.0124 mol of ch2o

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

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