Question

The number of molecules in 7g of nitrogen is

Answer 1

Answer:

N2=2×14 g =28g

28 gram of Nitrogen contains 6×10^23 molecules

7 gram of Nitrogen contains 1.5×10^23 molecules.

Explanation:

Answer 2

There are approximately$3.007 × 10^23$ molecules in 7g of nitrogen.

To calculate the number of molecules in 7g of nitrogen, we need to use Avogadro's number and the molar mass of nitrogen.

The molar mass of nitrogen is approximately 14.0067 g/mol. Hence, a mole of nitrogen comprises  $6.022 × 10^23$  molecules.

To find out how many moles of nitrogen are in 7g, $3.007 × 10^23$ .The mass must be divided by the molar mass:

Number of moles = 7g / 14.0067 g/mol = 0.4997 moles (rounded to four decimal places)

Eventually, we may determine the number of molecules using Avogadro's number:

Number of molecules = 0.4997 moles ×$6.022 × 10^23$ molecules/mole

=$3.007 × 10^23$ molecules

Therefore, there are approximately $3.007 × 10^23$ molecules in 7g of nitrogen.

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