Answer:
1.6254 x 10^23 molecules
Explanation:
Step 1:
Divide Mass by Molar Mass to get moles of substance
n = 4.32 / 16
n = 0.27 moles of Methane
Step 2:
Calculated no of moles Multiply by Avogadro's Number
No of molecules = moles x Avogadro's Number
No of molecules of methane = 0.27*6.02 x 10^23
No of molecules of methane = 1.6254 x 10^23 molecules