# How many moles are present in 21 2 g HCl?

Contents

## How many moles are in HCl?

Using periodic table you can find molar mass of HCl, which is 36.458 g/mol. This means 1 mol of HCl is 36.458 grams. So 20 g of HCl is 0.548 mol.

## How many grams of HCl are in a mol?

The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles HCl, or 36.46094 grams.

## How many moles are in 5g of HCl?

5g= 1 mole of HCl75. 0g= 75.0/36.5= 2.0548 moles of HClAgain, the ratio of the number of moles of Mg required to that of HCl required is 1:2.

## How do you calculate g to moles?

Divide the mass of the substance in grams by its molecular weight. This will give you the number of moles of that substance that are in the specified mass. For 12 g of water, (25 g)/(18.015 g/mol) = 0.666 moles.

## How many moles of HCl are there in 45g?

of moles =1.23 moles.

## How do you find moles of HCl?

Step 3: Calculate the concentration of hydrochloric acid in mol/dm 3

1. Concentration in mol/dm 3 =
2. Concentration in mol/dm 3 =
3. = 0.125 mol/dm 3
4. Relative formula mass of HCl = 1 + 35.5 = 36.5.
5. Mass = relative formula mass × amount.
6. Mass of HCl = 36.5 × 0.125.
7. = 4.56 g.
8. So concentration = 4.56 g/dm 3
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## How do you make 1 mol of HCl?

To make 1 L of 1 mol/L HCl, you take 88 mL of the concentrated solution and add water to make a total of 1 L.

Assume that you want to prepare 1 L of 1 mol/L HCl.

1. Calculate the moles of HCl needed. …
2. Calculate the mass of HCl Needed. …
3. Calculate the mass of solution required.

## How many moles are in 25 mL of HCl?

0.0042 moles of HCl in the 25 mL sample.