Chemistry: Determine the number of ch2cl2 molecules in 25.0 g ch2cl2.determine the number of ch2cl2 molecules in 25.0 g ch2cl2.

C. Evaporation Condensation Precipitation...

Determine the number of ch2cl2 molecules in 25.0

lexizamora2

15.03.2022

Answer : The number of molecules of CH_2Cl_2 are, $1.77\times10^{23}$

Explanation : Given,

Mass of CH_2Cl_2 = 25 g

Molar mass of CH_2Cl_2 = 85 g/mole

First we have to calculate the moles of CH_2Cl_2 .

$\text{Moles of }CH_2Cl_2=\frac{\text{Mass of }CH_2Cl_2}{\text{Molar mass of }CH_2Cl_2}=\frac{25g}{85g/mole}=0.294moles$

Now we have to calculate the number of molecules of CH_2Cl_2 .

As, 1 mole of CH_2Cl_2 contains $6.022\times 10^{23}$ number of molecules of

So, 0.294 mole of CH_2Cl_2 contains $0.294\times 6.022\times 10^{23}=1.77\times10^{23}$ number of molecules of

Therefore, the number of molecules of CH_2Cl_2 are, $1.77\times10^{23}$

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