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Because hydrogen occurs in nature as the diatomic molecule H2. So every molecule of H2 contains two hydrogen atoms. 1 mole of H2 has 6.022 x 1023 molecules of H2, while the number of atoms is twice that at 1.204 x 1024 atoms.

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Q: Why the number of atoms in one mole of hydrogen is double the number of atoms?
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How many atoms of hydrogen are in 2NH3?

1 mole NH3 (3 mole H/1 mole NH3) = 3 mole hydrogen atoms


What is one mole of hydrogen atom?

well firstly its got nothing to do with that its hydrogen so i guess its no!! One mole of hydrogen contains 6.022 x 1023 atoms of hydrogen and weights 1 gram. The hydrogen will exists in the molecular [H2] and so there will be 3.011 x 1023 molecules of hydrogen.


Mole of hydrogen vs mole of uranium?

1 hydrogen mole = 1,007 94 g 1 uranium mole = 238,028 91 g But the number of atoms in a mole is the same for all the elements (Avogadro constant = 6,022 141 79(30) × 1023).


How many atoms are there in a moleecule of hydrogen gas?

Hydrogen gas contains H2 molecules. 1 mole of H2 gas contains Avogadros number of molecules, 6.022 X 1023 therefore there are 2 twice as many atoms of hydrogen 12.024 X 1023 = 1.204 X 1024


How many grams are in a mole of hydrogen chloride?

Trick question. Hydrogen is a diatomic molecule; it travels around with a buddy as H2 and not as a single atom. This is generally true of all gases except the inert gases. By definition, a mole of anything has 6.022 x 1023 "units" of that stuff. (That's Avogadro's number.) The "stuff" is the atoms or the molecules of that "stuff" and it can be thought of in terms of the "reaction units" of that stuff. We do not have H2 + O = H2O. We have 2H2 + O2 = 2H2O because oxygen is diatomic like hydrogen. The "reaction units" of hydrogen and oxygen are H2 and O2 respectively. Now the answer will appear. A mole of hydrogen is 6.022 x 1023 units of hydrogen which will be 6.022 x 1023 molecules of hydrogen which will be (6.022 x 1023 times 2) atoms of hydrogen which will be 1.204 x 1024 atoms of hydrogen.

Related questions

What is the number of hydrogen atoms present in 0.791 mole of ammonia?

The number of hydrogen atoms is 14,290540253661.10e23.


How many grams of hydrogen are in one mole of water?

One mole of any substance contains 6.022x10 to the power of 23 molecules of that substance. A water molecule contains two hydrogen atoms so one molecule of water has 12.044x10 to 23 hydrogen atoms.


Why one mole of hydrogen molecule and one mole of hydrogen atoms have different masses?

because there are 2 hydrogen atoms in the molecule of hydrogen atoms


How many atoms of hydrogen are in 2NH3?

1 mole NH3 (3 mole H/1 mole NH3) = 3 mole hydrogen atoms


What is the relationship between avogadros number and one mole of any substance?

A mole of any substance has the Avogadro's number of such units. As an example, a mole of hydrogen atoms is equivalent to 6.022 x 1023 atoms.


How many hydrogen atoms are there in 0.5 mole of Hydrogen?

Avagadro's number = 6.022 × 1023 atoms/mol0.5 mol × (6.022 × 1023) atoms/mol = 3.011 ×1023 atoms


How is the avogadros number related to the mole?

Avogadro's number (generally written as 6.02 x 10^23) is the number of atoms or molecules it takes to have one mole of a particular atom or molecule. For example, one mole of Hydrogen is just 6.02 x 10^23 atoms of hydrogen.


What element on the periodic table is a mole based off?

A mole is Avagadro's number (6.0221415 × 10^23) atoms of any particular element. Therefore a mole of hydrogen contains 6.0221415 x 10^23 atoms of hydrogen.


Why one mole of hydrogen molecules and one mole of hydrogen atoms have different masses?

Because each hydrogen molecule contains 2 hydrogen atoms!


How many atoms of hydrogen are there in the mole of H2O molecules?

There are 2 hydrogen atoms and 1 oxygen.


Are the number of atoms found in 1 mole of H atoms the same as the number of atoms found in 1 mole of Ar atoms?

No, hydrogen is a diatomic atom, which means it bonds with itself naturally, and since argon it is a noble gas, it is found alone in nature. This means that 1 molecule of hydrogen has two atoms, while 1 molecule of Argon has 1 atom.


What is one mole of hydrogen atom?

well firstly its got nothing to do with that its hydrogen so i guess its no!! One mole of hydrogen contains 6.022 x 1023 atoms of hydrogen and weights 1 gram. The hydrogen will exists in the molecular [H2] and so there will be 3.011 x 1023 molecules of hydrogen.