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Explanation: In one mole of aluminum sulfate, Al2(SO4)3 , there are 2 moles Al atoms, 3 moles sulfur atoms, and 12 moles O atoms.

## How many molecules are there in Al2 SO4 3?

In this case, Al2 means 2 aluminums, (SO4)3 means 3 (SO4)s. The parentheses mean that the 3 has to be multiplied by whatever number of atoms you have of each element inside: 3×1 sulfurs, 3×4 oxygens. Now for the grand tally: 2 aluminum atoms + 3 sulfur atoms + 12 oxygen atoms = 17 atoms total in each molecule.

## How do you find the molar mass of Al2 SO4 3?

The molar mass of Al2 (SO4)3 is 342.14 g/mole.

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Answer and Explanation:

- Two aluminum atoms: 2(26.98 g/mole) = 53.96 g/mole.
- Three sulfur atoms: 3(32.06 g/mole) = 96.18 g/mole.
- Twelve oxygen atoms: 12(16.00 g/mole) = 192.00 g/mole.

## How do you calculate Al2 SO4 3?

Thus, to obtain the formula mass of Al2(SO4)3, just add up the relative atomic masses of every atom in one formula unit. Thus, the relative formula mass of Al2(SO4)3 = 2*27.0 + 3*(32.1+4*16) = 342.3.

## How do I calculate moles?

How to find moles?

- Measure the weight of your substance.
- Use a periodic table to find its atomic or molecular mass.
- Divide the weight by the atomic or molecular mass.
- Check your results with Omni Calculator.

## How do you calculate moles reacted?

Divide Grams by Grams per Mole

Divide the number of grams of each reactant by the number of grams per mole for that reactant. 50.0 g of Na are used in this reaction, and there are 22.990 g/mol. 50.0 ÷ 22.990 = 2.1749. 2.1749 moles of Na are used in this reaction.

## What how many atoms are in a mole?

The value of the mole is equal to the number of atoms in exactly 12 grams of pure carbon-12. 12.00 g C-12 = 1 mol C-12 atoms = 6.022 × 1023 atoms • The number of particles in 1 mole is called Avogadro’s Number (6.0221421 x 1023).

## What is the charge of SO4 3?

Al has a 3^{+} charge, and SO_{4} has a 2^{–} charge.

## How many moles of aluminum sulfur and oxygen atoms are there in one mole of Al2 SO4 3?

In one mole of aluminum sulfate, Al2(SO4)3 , there are 2 moles Al atoms, 3 moles sulfur atoms, and 12 moles O atoms.

## What is the moles of aluminum sulfate?

The molar mass of aluminum sulfate is 342.14 g/mole.