Question

how many molecules are there in 1g of chlorine

Answer 1

1 g of chlorine is composed of $1.72\times 10^{22}$ molecules.

Given:

Weight of chlorine = 1 g

To find:

Number of molecules = ?

Formula to be used:

Number of molecules = $\frac{Given mass}{Molar mass} \times Avogadro number$

Calculation:

The given substance is Chlorine. For it

Given mass = 1g

Molar mass = 35 g

Avogadro number = $6.022\times10^{23}$

Substituting the given values in the following formula gives:

Number of molecules = $\frac{Given mass}{Molar mass} \times Avogadro number$

Number of molecules = $\frac{1}{35}\times 6.022\times10^{23}$

Number of molecules = $\frac{6.022\times 10^{23}}{35}$

Number of molecules = $0.172\times 10^{23}$

Conclusion:

$1.72\times 10^{22}$ molecules are present in 1g of chlorine.

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Answer 2

Answer:

1 g of chlorine is composed of 1.72\times 10^{22}1.72×10

22

molecules.

Given:

Weight of chlorine = 1 g

To find:

Number of molecules = ?

Formula to be used:

Number of molecules = \frac{Given mass}{Molar mass} \times Avogadro number

Molarmass

Givenmass

×Avogadronumber

Calculation:

The given substance is Chlorine. For it

Given mass = 1g

Molar mass = 35 g

Avogadro number = 6.022\times10^{23}6.022×10

23

Substituting the given values in the following formula gives:

Number of molecules = \frac{Given mass}{Molar mass} \times Avogadro number

Molarmass

Givenmass

×Avogadronumber

Number of molecules = \frac{1}{35}\times 6.022\times10^{23}

35

1

×6.022×10

23

Number of molecules = \frac{6.022\times 10^{23}}{35}

35

6.022×10

23

Number of molecules = 0.172\times 10^{23}0.172×10

23

Conclusion:

1.72\times 10^{22}1.72×10

22

molecules are present in 1g of chlorine.