Calculate the number of hydrogen atoms in 33.0 g CH4

The number of hydrogen atoms is 4.96x10²⁴.

Explanation:

The number of atoms can be found with the following equation:

Where:

N: is the Avogadro's number = 6.022x10²³ atoms/mol

η: is the number of moles of hydrogen

n: is the number of hydrogen atoms

First, we need to find the number of hydrogen moles. The number of moles of CH₄ is:

Where:

m: is the mass of methane = 33 g

M: is the molar mass of methane = 16.04 g/mol                      

Now, since we have 4 hydrogen atoms in 1 mol of methane, the number of moles of hydrogen is:

Hence, the number of hydrogen atoms is:

Therefore, the number of hydrogen atoms is 4.96x10²⁴.

I hope it helps you!      

c. heat could easily travel through the molecules in the air and escape/enter the flask. removing the air slows down the heat transfer.