How many grams of FeCl3 does 5.88 X1028 weigh?

Answer 1

I don't have a good calculator, but i'll talk you through (will actually benefit you to do it yourself, this will come back to bite you if you don't learn it).

Avagadros number is no. molecules per mole. 5.88x1028 / avagadros number gives your amount of moles. Moles / molecular weight gives weight

Answer 2

To calculate the weight of FeCl3 in grams, you need to know the molar mass of FeCl3. The molar mass of FeCl3 is approximately 162.2 g/mol. Using this molar mass and Avogadro's number, you can determine that 5.88 x 10^28 molecules of FeCl3 weigh approximately 9.73 x 10^6 grams.