Question

calculate the mass of 6.022×10²³ molecules of calcium caco3​

Answer 1

Answer:

Explanation: Molecular weight is 100.0869g/mol

Mol= 1mol/6.022*10^23 molecules *6.022*10^24 molecules. = 0.1mol

Weight = mw*mol = 100.0869*0.1mol = 10.01g

So you change molecules or atoms into moles and then multiple it by the molecular weight to give you the weight. Just cancel units to give you gram