17.5k views
5 votes
A molecule has a molar mass of 22.45 g/mol. What is the mass of 4.12*10^24 of the molecules?

User Enigmadan
by
4.9k points

1 Answer

3 votes

Answer:

153.56g

Step-by-step explanation:

Number of moles = mass/molar mass

To get the number of moles of the molecule, we divide the number of molecules contained by Avagadro's number, which is 6.02 × 10^23 molecules.

moles = 4.12 × 10^24 ÷ 6.02 × 10^23

number of moles = 0.684 × 10^(24-23)

number of moles = 0.684 × 10^(1)

number of moles = 6.84mol

If the molar mass of the molecule is 22.45 g/mol, the mass of the molecule can be calculated thus:

mass = moles × molar mass (MM)

mass = 6.84 × 22.45

mass = 153.558

mass = 153.56g

User Caprica
by
4.8k points