**Contents**show

## What is the mass of 1 mole?

The mass of one mole of a substance is **equal to that substance’s molecular weight**. For example, the mean molecular weight of water is 18.015 atomic mass units (amu), so one mole of water weight 18.015 grams.

## Is 1 mole a mass?

Thus, for example, one mole of water (H_{2}O) contains 6.02214076×10^{23} molecules, whose total mass is about **18.015 grams** and the mean mass of one molecule of water is about 18.015 daltons, roughly a combined atomic mass number of 18.

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Mole (unit)

mole | |
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1 mol in … | … is equal to … |

SI base units | 1000 mmol |

## What is the mass of 2 moles of Cl2?

Answer: Cl2 contains two Cl atom so molar mass will be **35** . 5 x2 that is 71 GRAM means 0ne mole of Cl2 has 71 gram so 2.5 mol will be equal to 2.5×71. Gram.

## Is Cl2 one mole or two?

39.2 g Cl2(1 mole of Cl270.9 g Cl2)(6.022⋅1023molecules Cl21 mole Cl2)=3.33⋅1023 molecules **Cl2** . Hence, the answer is 3.33⋅1023 molecules of Cl2. Note that 6.022⋅1023 is also known as Avogadro’s number, and it can be referred to as the number of molecules in one mole of that substance.