What are the steps to solving these problems? i don’t need answers, just the steps on how to get the answers.

1. find the molecular mass of calcium citrate.

4. what is the mass of 8.94 x 10^21 molecules of ethanol (c2h5oh)?

5. how many formula units are in 926 g of febr3?

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1)Molar mass of calcium citrate is 498.46g/mol

4) Mass of molecules of ethanol is

5)926 gm of has

Explanation:

1)

The molecular formula of Calcium citrate-

Let's calculate the molar mass.

Therefore, molar mass of calcium citrate is 498.46g/mol

4)

One mole of molecule has molecules.

Molar mass of ethanol = 46.07 g/mol

Therefore, mass of molecules of ethanol is

5)

Molar mass of = 295.56g/mol

One mole has formula units.

Given mass = 926 g

Therefore, 926 gm of has