# How many atoms are in a kilogram of hydrogen?

## How many atoms are in a kilogram of hydrogen?

To make up 1 kilogram or 1000 g of hydrogen element, 1000 moles of hydrogen is required. Each mole has a Avogadro’s number of atoms or atoms. Thus, 1 kg hydrogen element or 1000 moles of hydrogen have atoms (or 1000 times the Avogadro’s number). Hydrogen gas, unlike hydrogen atom, is made up of 2 atoms of hydrogen.

## Which has more atoms a mole of hydrogen or a mole of lead?

For example, one mole of hydrogen atoms will weigh less than 1 mole of lead atoms because each individual atom of hydrogen is lighter than each individual lead atom. For example, the molar mass of carbon is 12.011 g/mol. This means that 1 mole of carbon, or 6.022⋅1023 atoms of carbon, weigh 12.011 g.

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Which has more atoms 1 kg of iron or 1kg of Aluminium?

Because the atomic mass of aluminum is smaller than that of iron, an atom of aluminum has less mass than an atom of iron. Thus 1 kg of aluminum will have more atoms than 1kg of iron.

### Which has more atoms 1g of hydrogen?

An atomic mass unit is TINY. One gram is equal to about 602000000000000000000000 amu (or 6 followed by 23 zeros). So, because the mass of hydrogen is close to 1 amu (atomic mass unit),1 gram of hydrogen contains about that same huge number of atoms.

### How much does a hydrogen atom weigh in kg?

Answer: Ans. 6.023×10^23 atoms of Hydrogen weigh 1.008 g. So, 1 atom of Hydrogen weighs 1.008/(6.023×10^23) g = 0.167×10^(-23) g = 1.67×10^(-27) kg .

How many atoms are in a kilogram?

Today, a group of physicists reveal the answer. They say there are 6.02214084(18) × 10^23 atoms in a single crystal of silicon weighing about a kilogram.

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## Will one mole of hydrogen atoms weigh the same as one mole of carbon atoms?

A hydrogen atom has a mass of 1.0 amu, which is 1/12 the mass of a C-12 atom. So again, by the arguments above, the mass of a MOLE of hydrogen atoms would be 1/12 the mass of a MOLE of C-12 atoms, or 1.0 g.

## How many moles of electrons weigh 1kg?

Or, 1 kg will contain = $\dfrac{1}{{9.108 \times 6.022}} \times {10^8}$ moles of electrons. Thus, $\dfrac{1}{{9.108 \times 6.022}} \times {10^8}$ moles of electrons will weigh one kilogram. So, the correct answer is “Option D”.

How many atoms are in 1kg of iron?

In the one-kilogram iron weight there are 1.08·1025 atoms, which corresponds to the chemical amount of approximately 17.9 moles of atoms.

### Which contains more atoms lead or aluminum?

Discuss which contains more atoms: 1kg of lead or 1kg of aluminum. Since aluminum atoms are less massive than lead atoms, there are MORE ALUMINUM atoms than lead atoms in a 1-kg sample.

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### Which contains more atoms?

Helium has the most number of mol out of all the options and will thus have the highest number of atoms. Look up the atomic weight (in grams per mole) of each of these 5 elements, and divide the given mass of the element by its atomic weight. That gives the number of moles of each element.

Which has more mass hydrogen or carbon?

These values tell you that a magnesium atom has twice the mass of a carbon atom, and 24 times more mass than a hydrogen atom. They also tell you that hydrogen atoms have 12 times less mass than a carbon atom….A r values of elements.

Element Relative atomic mass
Hydrogen (H) 1
Carbon (C) 12
Oxygen (O) 16
Magnesium (Mg) 24