# How many moles are in 20g of water?

Contents

Convert into mole.

## How many moles are in 20 grams?

There are 5.00 moles He in 20.0 g He.

= 18 g.

## How many particles are in 20g of water?

There are 3 atoms in water, 1 oxygen, 2 hydrogen. total molecular weight 18. (assuming all average isotopic weight). 20g/18MU x 6E23 = 6.6E23 molecules.

## What is the mass of 20 mole of water?

(ii) From point, 1 mole of water = molar mass of water =18g 20 moles of water = 18 g x 20 = 360g (iv) From point, 6.022 x 1023 molecules of water = 1 mole = 18g of water 1.2044 x 1025 molecules of water Therefore, points (ii) and (iv) represent 360 g of water.

## How many moles is water?

The number of atoms is an exact number, the number of mole is an exact number; they do not affect the number of significant figures. The average mass of one mole of H2O is 18.02 grams. This is stated: the molar mass of water is 18.02 g/mol. Notice that the molar mass and the formula mass are numerically the same.

IT IS INTERESTING:  Question: Can birth control help acne?

## What is the mass of 20 moles of he?

The number of moles of helium is 20.0 mol. The molar mass of helium is 4.002g/mol.

## How do you convert to moles?

A substance’s molar mass is calculated by multiplying its relative atomic mass by the molar mass constant (1 g/mol). The molar mass constant can be used to convert mass to moles. By multiplying a given mass by the molar mass, the amount of moles of the substance can be calculated.

## How many moles of hydrogen are in 2 moles of water?

1: Two water molecules contain 4 hydrogen atoms and 2 oxygen atoms. A mole of water molecules contains 2 moles of hydrogen atoms and 1 mole of oxygen atoms.

## What is the molar mass of water?

Convert 22 g of carbon dioxide (CO_(2)) into moles. (Atomic masses : C = 12 u, O = 16 u) So, the mass of 1 mole of carbon dioxide is 44 grams. Thus, 22 grams of carbon dioxide are equal to 0.5 mole.

## What is Avogadro’s Number calculate the number of water molecules present in 20 gram water?

=6.69 x 10^23 molecules.

## What is the mass of 0.5 moles of water?

Mass of 0.5 mole of water is 9g.

## How many moles are 3.6 gram of water?

Hence, the number of moles present in 3.6 gram of water are 0.2 moles.

## Which of the following correctly represents 360g of water 1 A 2 moles of water C 6.022000 moles of water d 1.2044 1025 moles of water molecules?

=> The molar mass of water is 18 g/mol. 360/18=20mol. => It is also equal to 20mol×6.023×10*23molecules/mol= 1.2044×10*25 molecules. => Thus, the options (d) (ii) and (iv) correctly represents 360 g of water.

IT IS INTERESTING:  Can eczema be stress induced?

## Which of the following correctly represents 360g of water Mcq?

20 moles of water and 1.2044×1025 molecules of water correctly represent 360 gms of water.