how many moles are there in 12.7g of caf₂?\n0.16 mol\n6.14 mol\n1,000.76 mol\n0.20 mol
how many moles are there in 12.7g of caf₂?\n0.16 mol\n6.14 mol\n1,000.76 mol\n0.20 mol
Answer
Explanation:
Step1: Calculate molar mass of CaF₂
The molar mass of Ca is approximately 40.08 g/mol and F is approximately 19.00 g/mol. For CaF₂, molar mass $M = 40.08+2\times19.00=40.08 + 38.00=78.08$ g/mol.
Step2: Use mole - mass formula
The formula to calculate the number of moles $n$ is $n=\frac{m}{M}$, where $m = 12.7$ g and $M = 78.08$ g/mol. So $n=\frac{12.7}{78.08}\approx0.16$ mol.
Answer:
A. 0.16 mol