Question

calculate the number of molecules in 50 ml of ch3oh
(density of CH3OH=0.8 gm/ml)

Answer 1

Explanation:

molar mass of CH3OH is (12+ 4*1 + 16) = 32g

now weight of 50ml is 50*0.8 = 40g

therefore number of moles in 40g is 40/32= 5/4 = 1.25 moles.

therefore number of molecules = 1.25*No

where No is the avogadro number.

= 1.25* 6.023*10²³ molecut

Answer 2

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