# How many atoms are present in one mole of iron?

Explanation: One mole of anything is 6.022×1023 everythings, including atoms. Multiply the moles Fe by 6.022×1023 atoms/mol.
A.

### What is the mass of a mole of iron?

1 mole is equal to 1 moles Iron, or 55.845 grams.
• #### How many atoms are in a molecule of iron?

Explanation: In order to be able to determine how many atoms you have in those two samples, you first need to find how many moles of each element you have here. As you know, one mole of any element contains exactly 6.022⋅1023 atoms of that element - this is known as Avogadro's number.

12 grams
• #### How many grams are in 1 mole of lead?

How many moles Lead in 1 grams? The answer is 0.0048262548262548. We assume you are converting between moles Lead and gram. 1 mole is equal to 1 moles Lead, or 207.2 grams.
B.

### How many moles of iron are there in 1 mole of Fe2O3?

In one mole of fe2o3 there are two moles of iron atoms. Now gram atomic wt.of Fe is 56.So in one mole of Fe2O3 there are 2×56=112 gm of Fe. Hence in 1.75moles Fe2O3 there are 1.75×2 moles or 1.75×56 gm of iron.
• #### How many grams are in 1 mole of oxygen?

One mole equals 6 x 10^23 atoms/molecules/whatever. So take the molecular mass of elemental oxygen - 16 grams per mole. Then convert from moles to grams: 1 mole elemental oxygen(16 grams O/1 mole) = 16 grams.
• #### How many moles of oxygen is this?

There is a unique relationship between molar mass and atomic weight: Oxygen's atomic weight is 16.00 amu. 1 mole of oxygen is 6.02 x 1023 atoms of oxygen 1 amu = 1.661 x 10-24g What is the molar mass (g/mole) of oxygen? Molar mass (in grams) is always equal to the atomic weight of the atom!
• #### What is 3 liters of oxygen?

Every liter/minute of oxygen increases the percentage of O2 the patient breathes by 3 – 4 %. Room air is 21% O2. So if a patient is on 4 L/min O2 flow, then he or she is breathing air that is about 33 – 37% O2.
C.

### How many atoms are there in 3 moles of iron?

For example a mole of sodium has 6.022*10^23 sodium atoms while one mole of sodium chloride has 6.022*10^23 molecules of sodium chloride. The elementary unit in the case of Fe2O3 has 2 atoms of iron and 3 atoms of oxygen. 6 moles of Fe2O3 have 6*2*6.022*10^23 atoms of iron.
• #### How many atoms are in the 3.5 moles of arsenic?

Answer and Explanation: In one mole of arsenic atoms, there are 6.022 x 10^23 atoms. So, to determine the number of atoms in 3.5 moles of arsenic, all you have to do is multiply 3.5 by Avogadro's number.
• #### What is the total number of nitrogen atoms in 0.25 moles of no2?

1 mol of atoms contains Avogadro's number of atoms. Avogadro's number = NA = 6.022140857(741023 . Explanation: So there are 14 × NA nitrogen atoms in such a molar quantity of nitric oxide, approx. 1.5×1023 individual nitrogen atoms.
• #### How many molecules are in a mole of salt?

The atomic mass of Na is 23 gr per mole, and the atomic mass of Cl is 35.5 gr per mole. So, the average 'atomic weight of salt' is 29.25 grams per mole. Now it is a simple matter to find how many atoms there are in a grain of salt. (Note that one mole contains Avogadro's number of atoms, which is 6.02x1023.)

Updated: 8th October 2018