The correct answer is the one in the middle. Mixing food coloring and water
Answer:
The answer to your question is: 2.20 x 10 ²³ molecules
Explanation:
Data
mass = 45.7 g
molecules of CF₂Cl₂ = ?
Process
1.- Calculate the mass number of CF₂Cl₂
C = 12 F =2 x 19 Cl = 2 x 35.5
total = 12 + 38 + 71
total = 121 g
2.- Use the Avogradro's number to solve the problem
121 g ------------------- 6.023 x 10²³ molecules of CF₂Cl₂
45.7 g --------------- x
x = (45.7 x 6.023 x 10²³) / 121
x = 2.75 x 10²⁵ / 121
x = 2.20 x 10 ²³ molecules
Answer:
1 mole of SO2 = 1 mole of S + 2 moles of O
It is a well-known fact that
1 mole of any substance contains 6.023x10^23 particles.
So,
1 mole of O = 6.023x10^23 atoms
As there are 2 moles of Oxygen in SO2, therefore
2 moles of O = 2 x 6.023x10^23 atoms
2 moles of O = 12.046x10^23 atoms
Now it is obvious that
12.046x10^23 atoms of Oxygen are present in 1 mole of SO2.
Explanation:
