Question

Calculate:
Number of molecules in 8g CH4​

Answer 1

There is a formula: n = m/Mw. (when Mw is molar weight and n is number of moles)

After you have found the number of moles of methane (CH4), you should multiply this number by avogadro number (6.022 * 10^23) and you get the number of molecules.

Here is the calculation: n = 8.0 gr / 16.043 gr/mol = 0.499 mol.

Number of molecules = 0.499 mol * (6.022 * 10^23 1/mol) = 3.005 * 10^23 molecules.

Answer 2

Answer:

Answer. There are 1.8021⋅1024 molecules of CH4 in 48 grams of CH4 .