4 grams.
Approximately, mass (in grams) of 1 mole of any chemical element is just the Atomic Mass of this element (4 - for He, 12 - for C, and so on). It follows from the definition of one mole - number of atoms in 12 g of C.
To find the mass of 4.00 × 10²² helium atoms, first determine the number of moles of helium. Since one mole of helium contains approximately 6.022 × 10²³ atoms, you can calculate the number of moles: [ \text{Moles of He} = \frac{4.00 \times 10^{22}}{6.022 \times 10^{23}} \approx 0.0664 \text{ moles} ] Next, knowing that the molar mass of helium is about 4.00 g/mol, the mass can be calculated as: [ \text{Mass} = 0.0664 \text{ moles} \times 4.00 \text{ g/mol} \approx 0.2656 \text{ g} ] Thus, the mass of 4.00 × 10²² helium atoms is approximately 0.266 grams.
32 g
1 mole of helium weighs 4.0026 g So. 18.8 of helium will weigh 75.25 g
1 mole of He-4 isotope weight about 4 g So 1.5 mole of He-4 isotope weight about 6 g
A gram atomic mass of helium (He) contains the same number of atoms as 1 mole of helium. Since 1 mole of any substance contains approximately 6.022 x 10^23 atoms, a sample of helium with a gram atomic mass would contain that same number of atoms.
To find the mass of 4.00 × 10²² helium atoms, first determine the number of moles of helium. Since one mole of helium contains approximately 6.022 × 10²³ atoms, you can calculate the number of moles: [ \text{Moles of He} = \frac{4.00 \times 10^{22}}{6.022 \times 10^{23}} \approx 0.0664 \text{ moles} ] Next, knowing that the molar mass of helium is about 4.00 g/mol, the mass can be calculated as: [ \text{Mass} = 0.0664 \text{ moles} \times 4.00 \text{ g/mol} \approx 0.2656 \text{ g} ] Thus, the mass of 4.00 × 10²² helium atoms is approximately 0.266 grams.
32 g
To find the mass of 3.40x10^22 helium atoms, you need to know the molar mass of helium, which is 4.0026 g/mol. So, the mass of 3.40x10^22 helium atoms would be 3.40x10^22 atoms * (4.0026 g/mol/6.022x10^23 atoms/mol) ≈ 2.27 grams.
1 mole of helium weighs 4.0026 g So. 18.8 of helium will weigh 75.25 g
No, 1 mole of hydrogen atoms does not equal 1 mole of helium atoms. One mole of any element contains Avogadro's number of atoms (6.022 x 10^23), so 1 mole of hydrogen atoms would have that many hydrogen atoms, while 1 mole of helium atoms would have that many helium atoms.
A mole of iron has more mass than a mole of helium, even though they contain the same number of atoms, because 1 atom of iron has a greater mass than 1 atom of helium. It is similar to why 1 dozen bricks has a greater mass than 1 dozen roses. There are 12 items in each case, but 1 brick has a greater mass than 1 rose.
The mass of one mole of atoms is equal to the atomic mass of the element expressed in grams. This is known as the molar mass. For example, the molar mass of carbon (C) is 12 grams per mole, of oxygen (O) is 16 grams per mole, and so on.
1 mole of He-4 isotope weight about 4 g So 1.5 mole of He-4 isotope weight about 6 g
A gram atomic mass of helium (He) contains the same number of atoms as 1 mole of helium. Since 1 mole of any substance contains approximately 6.022 x 10^23 atoms, a sample of helium with a gram atomic mass would contain that same number of atoms.
The weight is greater for 2 atoms of lead.
Yes. 16.00g of oxygen is its molar mass, which is the mass of one mole of oxygen. 4.003g is the molar mass of helium, which is also the mass of one mole of helium. One mole of anything is 6.022 x 1023. One mole of oxygen atoms is 6.022 x 1023 atoms of oxygen and one mole of helium atoms is 6.022 x 1023 atoms of helium.
1 mole of helium weighs 4.0026 g So. 18.8 of helium will weigh 75.25 g