Question

4.0 moles of H2O would have what mass?
Group of answer choices

18 g

23 g

68 g

72 g

Answer 1

Answer:

How many moles H2O in 1 grams? The answer is 0.055508435061792.

We assume you are converting between moles H2O and gram.

You can view more details on each measurement unit:

molecular weight of H2O or grams

This compound is also known as Water or Dihydrogen Monoxide.

The SI base unit for amount of substance is the mole.

1 mole is equal to 1 moles H2O, or 18.01528 grams.

Explanation:

Answer 2

The mass of 4.0 moles of water is 72 grams.

Explanation:

• Moles of the substance is equal to the ratio of the mass of substance to the molar mass of the substance:

$Moles=\frac{\text{mass of substance}}{\text{molar mass of substance}}$

Given:

The 4.0 moles of water

To find:

Mass of moles of water

Solution:

The moles of water = 4.0 moles

The mass of water = M

The molar mass of water = 18.01528 g/mol

$4.0=\frac{m}{ 18.01528 g/mol}\\m=4.0\times 18.01528 g/mol\\=72.06112 g\approx 72 g$

The mass of 4.0 moles of water is 72 grams.

Learn more about moles of substance here:

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