2 moles of Ca and 4 moles of OH
425 g calcium (Ca) is equal to 10,604 moles.
978 g calcium contain 24,4 moles.
3 moles of Ca would have 1.806 × 10^24 atoms.
Calcium, Ca has atomic mass of 40.1Amount of Ca = 16.5/40.1 = 0.411molThere are 0.411 moles of calcium in a 16.5 gram sample.
There are 0.18 moles of Ca2+ ions in 0.18 moles of CaF2.
2 moles of Ca and 4 moles of OH
425 g calcium (Ca) is equal to 10,604 moles.
44 moles of atoms
126 grams calcium (1 mole Ca/40.08 grams) = 3.14 moles of calcium ------------------------------
3.8 grams calcium (1 mole Ca/40.08 grams) = 0.09 moles calcium ==============
978 g calcium contain 24,4 moles.
For this you need the atomic mass of Ca. Take the number of moles and multiply it by the atomic mass. Divide by one mole for units to cancel. Ca= 40.1 grams.761 moles Ca × (40.1 grams) = 30.5 grams Ca
156 g calcium is equivalent to 3,89 moles.
3 moles of Ca would have 1.806 × 10^24 atoms.
1.34 moles Ca x 6.02x10^23 atoms Ca/mole Ca = 8.07x10^23 atoms of Ca
Calcium, Ca has atomic mass of 40.1Amount of Ca = 16.5/40.1 = 0.411molThere are 0.411 moles of calcium in a 16.5 gram sample.