Question

2. Plants in a garden make use of 22.4 litres of carbon dioxide
at STP (Standard temperature and Pressure) The number of
molecules of carbondioxide utilised by the plants is,
a. 6.023x1023 molecules
b. 22.4 molecules
c. 6.023x1024 atoms
d. 11.2 moles of molecules​

Answer 1

Answer:

A)6.023×10²³ molecules

Explanation:

According to Avogadro’s law, equal volumes of all gases contain an equal number of molecules at a constant temperature and pressure.

The standard molar volume of a gas is the volume occupied by one mole of any gas at 273 K and 1 atm pressure (STP) is 22.4 litres. It is the same for all gases.

And we know that 6.023×1023 molecules are present in one mole of any gas. So the number of molecules of carbon dioxide utilized by the plants will be 6.023×10²³ molecules