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## How many grams are in a 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.

## How many grams is 5 moles of carbon?

Carbon-12 refers to the isotope of carbon that has an atomic mass of 12.0000 g. Thus, the mass of one mole of carbon-12 is 12.0000 g. Therefore, the mass of 5 moles of C-12 is 5 × 12.0000 = **60.0000 g**.

## Is 12 grams of carbon a mole?

as there are atoms in exactly 12 grams of carbon-12 (i.e., 6.022 X 10^{23}). So the mole is the title used for the amount 6.022 x 10^{23} much the same way the word “dozen” is used for the amount 12. … This means that the atomic mass or atomic weight (12 grams) **of carbon is equal to exactly 1 mole of carbon**.

## How many moles is 40 grams of carbon?

The answer is **12.0107**.

## Why is carbon-12 the standard?

Carbon-12 is of particular importance in its use as **the standard from which atomic masses of all nuclides are measured**, thus, its atomic mass is exactly 12 daltons by definition. Carbon-12 is composed of 6 protons, 6 neutrons, and 6 electrons.

## How much is in a mole?

A mole is defined as **6.02214076 × 10 ^{23} of some chemical** unit, be it atoms, molecules, ions, or others. The mole is a convenient unit to use because of the great number of atoms, molecules, or others in any substance.