How many moles in 40.08 g CaCO3.
moles = grams/molar mass
How many molecules of CaCO3 are in that many moles. Remember there are 6.02 x 10^23 molecules per mole of anything.
Now that you know the number of CaCO3 molecules, how many Ca^+2 ions per molecule. There is 1.
I think the molar mass CaCO3 = about 100 grams/mole but you can look it up exactly.
40.08 g CaCO3 x (1 mole CaCO3/100 g CaCO3) x (6.02 x 10^23 molecules CaCO3/1 mole CaCO3) x (1 Ca^+2/1 CaCO3 molecule) = ?? Ca^+2 ions.
Check my thinking.
How many Ca +2 ions in 40.08g of CaCO3 (Calcium Carbonate)
I'm unsure on how to approach this problem and set it up.
1 answer
1 answer