# How many moles of Zn will be needed to completely react with 0 4 moles of HCL?

Contents

0.2 moles of zinc metal are required for reaction with 0.4 moles of hydrochloric acid.

## What mass of Zn is required to react completely with HCl?

Since 1 mole of gas at STP occupies 22.414 litres, 1 litre of hydrogen represents 1/22.414 = 0.0446 moles of H2. Mass of Zn required = 0.0446 * 65.38 = 2.9159 grams.

## What is the mole ratio of Zn HCl?

Step 2: The molar ratio between Zn and HCl is 1:2. Since 9.176 10 2 moles HCl are needed to completely react with 3.00 g of Zn, and 0.100 moles of HCl are actually avail- able, HCl is in small excess.

## How many grams zinc react?

0.855 g (0.131 mol) is a correct answer.

## How many grams of zinc will react with 25 ml of a 4.0 M HCl solution to produce hydrogen gas?

Since 1 mole of gas at STP occupies 22.414 litres, 1 litre of hydrogen represents 1/22.414 = 0.0446 moles of H2. Mass of Zn required = 0.0446 * 65.38 = 2.9159 grams.

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## How many moles are in zinc?

Zinc is a chemical element that you can find in the periodic table. The symbol for zinc is Zn, and its atomic number is 30. More importantly for the purposes of making our converter, the atomic mass of zinc is 65.38. That means that one mole of zinc weighs 65.38 grams (65.38 g/mol).

## What number of moles of H2 are released when 3 moles of Zn completely react with HCl?

As per the balanced chemical equation, 1.0 mole of zinc reacts with HCl to produce 1.0 mole of hydrogen gas. Therefore, the number of moles of hydrogen gas produced from the reaction of 3.0 moles of Zn is 3.0 moles.

## How many moles reacted with zinc?

One mole of zinc will react with 2 moles of aqueous hydrogen chloride to form one mole of zinc chloride and one mole of hydrogen gas.

## How do you calculate moles in a reaction?

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 do I calculate moles?

How to find moles?

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

## How many grams of zinc will be formed?

If you have 84.1 grams of Zinc how many grams of ZnCl2 will form? Wyzant Ask An Expert. Kelli C.

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## How many liters of hydrogen gas at STP are produced when 25 ml of 4.00 M HCL completely reacts with zinc metal?

The answer is 21.5 L .

## When you use 15 ml of 3.0 M HCL to produce h2 gas How many grams of zinc does it react with?

If 36.0 ml. of H3PO4 react exactly with 80.0 ml. of 0.500 M NaOH, what is the concentration of the phosphoric acid?