Question
How many moles are in 75.0 grams of CaCl2?
Answers
Answered by
GPT 3.5
To find the number of moles in 75.0 grams of CaCl2, we first need to determine the molar mass of CaCl2.
The molar mass of CaCl2 can be calculated as follows:
Ca = 40.08 g/mol
Cl = 35.45 g/mol (x2 since there are two Cl atoms in one CaCl2 molecule)
Molar Mass of CaCl2 = 40.08 + 35.45 x 2 = 110.98 g/mol
Now, we can calculate the number of moles in 75.0 grams of CaCl2:
Number of moles = Mass / Molar Mass
Number of moles = 75.0 g / 110.98 g/mol
Number of moles ≈ 0.675 moles
Therefore, there are approximately 0.675 moles in 75.0 grams of CaCl2.
The molar mass of CaCl2 can be calculated as follows:
Ca = 40.08 g/mol
Cl = 35.45 g/mol (x2 since there are two Cl atoms in one CaCl2 molecule)
Molar Mass of CaCl2 = 40.08 + 35.45 x 2 = 110.98 g/mol
Now, we can calculate the number of moles in 75.0 grams of CaCl2:
Number of moles = Mass / Molar Mass
Number of moles = 75.0 g / 110.98 g/mol
Number of moles ≈ 0.675 moles
Therefore, there are approximately 0.675 moles in 75.0 grams of CaCl2.