Answer:
15.92g
Explanation:
Firstly, we calculate the number of moles in the molecule by saying:
Number of molecule of SO3 ÷ 6.02 × 10^23
1.2 × 10^23 ÷ 6.02 × 10^23
0.199 × 10^(23-23)
0.199 × 10^0
0.199 moles
Since there are 0.199 moles of SO3, the mass can be calculated by using;
Mole = mass ÷ molar mass
Molar Mass of SO3 = 32 + 16(3)
= 32 + 48
= 80g/mol
Mass (g) = molar mass (g/mol) × Mole (mol)
Mass = 80 × 0.199
Mass = 15.92g
