# How many moles of Mg reacts with 1 mole of HCl?

Contents

## How many moles are needed to react with moles?

Determine the number of moles needed to react by multiplying by moles of the known substance by the stoichiometric ratio of the unknown substance to the known substance.

## How do you find moles from MG?

Example calculation:

1. Mass magnesium = 2.39 g.
2. Mass magnesium oxide = 3.78 g.
3. So mass oxygen = 1.39 g.
4. Number moles Mg = 2.39/24 = 0.0995.
5. Number moles O = 1.39/16 = 0.0868.
6. Divide by the smallest to give the ratio aproximately 1 Mg : 1 O.
7. This would suggest a formula of MgO, which is the correct formula.

## How do you calculate reacting moles?

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.

## 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 do you calculate 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 many moles are in cadmium?

Cadmium is a chemical element that you can find in the periodic table. The symbol for cadmium is Cd, and its atomic number is 48. More importantly for the purposes of making our converter, the atomic mass of cadmium is 112.41. That means that one mole of cadmium weighs 112.41 grams (112.41 g/mol).

## How do you do Stoich?

Almost all stoichiometric problems can be solved in just four simple steps:

1. Balance the equation.
2. Convert units of a given substance to moles.
3. Using the mole ratio, calculate the moles of substance yielded by the reaction.
4. Convert moles of wanted substance to desired units.