Calculate the number of molecules present in the 64g of oxygen gas.

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Solution

Given:
Mass of oxygen gas (m) = 64 g

Solution:
Number of molecules (N) = $\frac{m}{M} N_{A}$

Molecular mass of oxygen gas(M) = 32 g

Number of atoms (N) = $\frac{64}{32} \times 6.022 \times 10^{23}$

= $12.044 \times 10^{23}$ atoms

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Calculate the number of molecules present in the 64g of oxygen gas.

Given:​ Mass of oxygen gas (m)​ = 64 g Solution: Number of molecules (N) = ​mMNA Molecular mass of oxygen gas(M)​ = 32 g Number of atoms (N)​ = 6432× 6.022 × 1023 = 12.044 × 1023atoms

Given:
Mass of oxygen gas (m) = 64 g

Solution:
Number of molecules (N) = $\frac{m}{M} N_{A}$

Molecular mass of oxygen gas(M) = 32 g

Number of atoms (N) = $\frac{64}{32} \times 6.022 \times 10^{23}$

= $12.044 \times 10^{23}$ atoms