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Moles to Grams Calculator
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Moles and grams can be related using the atomic weights given in the periodic table. Atomic weights on the periodic table are given in terms of atomic mass units (amu), but an amu is the same as a gram per mole.

The relationship between amu and g/mol to convert between grams and moles by using the following equation.
$Moles$ = $\frac{Grams\ of\ substance}{Atomic\ weight}$

$Grams$ = $Moles\ \times\ Formula\ weight$

## Steps for Moles for Grams calculator

Step 1 :

Read the problem and find out the values given.

Step 2 :

Substitute the values in the formula to convert the given moles into grams.

$Grams = Moles \times Formula\ weight$

## Problems on Moles to Grams calculator

1. ### 2.0 moles of phosphorous is given, find out how many grams of phosphorous we have?

Step 1 :

Given data

Moles of phosphorous = 2.0 mol

The atomic weight of phosphorous according to periodic table is 31.0 grams/mole

Step 2 :

Substitute the values in the formula

$Grams = Moles \times Formula\ weight$

Grams = 2.0 $\times$ 31.0

Grams = 62gm of phoshorous

2.0 moles of phosphorous have 62 grams of phosphorous.

2. ### 10 moles of water is given. Calculate how many grams of water molecules are present?

Step 1 :

Given data

Moles of water = 10 mol

From the periodic table the atomic weight of water is calculated as

Atomic weight of hydrogen = 1 g/mol and oxygen = 16 g/mol

(2(1) + 16 = 18)

Step 2 :

Substitute the values in the formula.

$Grams = Moles \times Formula\ weight$

Grams = 10 $\times$ 18

Grams = 180 grams

10 moles of water molecules contain 180 grams of water molecules.

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