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## How many atoms are in 2 moles of helium?

If I fill up a balloon with 2 moles of helium atoms, how many helium atoms would be in the balloon? If 1 mole of atoms is 6.02 x 1023 atoms, then 2 moles of atoms would be equal to **1.20 x 1024 atoms**.

## What is the mass of 2 moles?

Just multiply 2 by 31.9988 g because there are two moles of oxygen. So, the answer is **63.9976 g** ..

## What is the mass of 0.5 moles of helium atoms?

On solving, we get the value of mass of helium gas. Hence, the **2g** mass of helium gas is present in 0.5moles.

## How many atoms are in 4 moles helium?

– So, the no of atoms in 4 moles of helium is **2.4088 × 10²⁴**.

## How many atoms are in 2 moles?

If we have 2 mol of Na atoms, we have 2 × (6.022 × 10 ^{23}) Na atoms, or **1.2044 × 10 ^{24} Na atoms**.

## What is the average mass in grams of one helium?

The mass of one helium atom is **6.6×10 ^{–}^{24} g**.

## What is the mass in grams of one atom of HE 4?

The total spin of the helium-4 nucleus is an integer (zero), and therefore it is a boson (as are neutral atoms of helium-4).

…

Helium-4.

General | |
---|---|

Half-life | stable |

Isotope mass | 4.002603254 u |

Spin | |

Binding energy | 28295.7 keV |

## What is the mass in grams of 2.5 mol of oxygen atoms?

=2.5×16= **40g**.

## What is the mass of 2 mole of water?

One mole of H2 O is made up of 2 moles of Hydrogen atoms and 1 mole of Oxygen atom. Mass of two moles of Hydrogen atoms = 2x 1 g/mol = 2 g/mol. Mass of one mole of water = 2 g/mol + 16 g/mol = **18 g/mol**.

## How do you find the mass of 4 moles of helium?

The total mass of four moles of helium (He) is **16.0104 grams**. Helium has an atomic mass of 4.0026 atomic mass units, which is the average mass of…

## How many moles is 80 grams of calcium?

Here, it is given that the weight of calcium is $80g$ and the atomic mass of calcium is $40u$ . where, $n$ is the number of moles of calcium, $W$ is the weight of calcium and $M$ is the molar mass of calcium. Therefore, the number of moles present in $80g$ of calcium is **$2,mol$** .