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## How many atoms are in a mole of Fe?

Explanation: The atomic mass of iron (Fe) is 55.85 amu. The atomic mass of radium (Ra) is 226 amu. One mole of atoms of any element contains **6.022 X 1023 atoms**, regardless of the type of element.

## What is the mass of 0.25 moles of iron?

molar mass 56. Therefore. 0.25 x 56 **–** **1.4 x 10-2 kg**.

## How many atoms are in a Fe?

Explanation: One mole of anything is 6.022×1023 everythings, including atoms. Multiply the moles Fe by 6.022×1023 atoms/mol. 3.77mol Fe ×6.022×1023atoms Fe1mol Fe =**2.27×1024 atoms** Fe rounded to three significant figures.

## How many atoms are there in 2 mol of Fe iron?

There are **two atoms** in 2 Fe, more correctly written as 2Fe or Fe2. Both atoms are from the same element, iron.

## How many atoms are in 1g of iron?

**1/56*6.022*10^23 atoms**.

## What is the mass of 0.25 moles of water?

Explanation: 1 mole of water weighs equal to the molecular mass of water. Thus the amount of present in 0.25 mole of it is **4.5 grams**.

## How do you solve for moles?

So in order to calculate the number of moles of any substance present in the sample, we simply **divide the given weight of the substance by its molar mass**. Where ‘n’ is the number of moles, ‘m’ is the given mass and ‘M’ is the molar mass.

## How do you solve a mole equation?

Worked Example: **moles = mass ÷ molar mass (n=m/M)** Question: Calculate the amount of oxygen gas, O_{2}, in moles present in 124.5 g of oxygen gas.

## What is the mole of iron?

Iron has a molar mass of **55.84 grams/mole**.

## How many atoms are in 1 mole of barium?

The question specified molar quantities, and the mole is just another number, admittedly a very large number, i.e. NA = 6.022×1023 mol−1 . So in 1 mole of BaCl2 , there are **3 × NA barium** and chlorine atoms, where NA is Avogadro’s number, 6.022×1023 .