Quite a few.
6.32 X 10^25 atoms sodium (1 mole Na/6.022 X 10^23)
= 105 moles of sodium
First calculate the moles of sodium moles = 500 g/ 23 = 21.739 ... Remember the Avogadro Number. 6.022 x 10^(23) is the number of atoms in one mole Hence , multiplying 6.022 x 10^(23) X 21.739... = 1.309 x 10^(25) atoms in 0.5 kg of sodium .
To find the number of moles, you first need to recognize that 6.022 x 10^23 atoms make up one mole (Avogadro's number). Thus, divide 6.85 x 10^25 atoms by Avogadro's number to get the number of moles. Therefore, the number of moles of potassium in this case would be 11.4 moles.
5.0x10^25 * (1 mol / 6.022x10^23 atoms) = 83 moles of iron.
To find the number of moles in 4.06 x 10^25 molecules of sodium fluoride, you would divide the number of molecules by Avogadro's number, which is approximately 6.022 x 10^23 molecules/mol. Therefore, 4.06 x 10^25 molecules / 6.022 x 10^23 molecules/mol ≈ 67.5 moles of sodium fluoride.
7.30 C2H6O (6 moles H/1 mole C2H6O)(6.022 X 1023/1 mole H) = 2.64 X 1025 atoms of hydrogen =====================
In order to find how many Moles of He are 1.20 x 1025 atoms of He, you need to divide 1.20 x 1025 atoms by the Avagadro's number (6.022 x 1023) The answer is 19.9 moles of He.
First calculate the moles of sodium moles = 500 g/ 23 = 21.739 ... Remember the Avogadro Number. 6.022 x 10^(23) is the number of atoms in one mole Hence , multiplying 6.022 x 10^(23) X 21.739... = 1.309 x 10^(25) atoms in 0.5 kg of sodium .
To find the number of moles of PCl3, you need to first calculate the number of moles of Cl atoms in 3.68 * 10^25 atoms. There are 3 Cl atoms in each molecule of PCl3, so you divide the number of Cl atoms by 3 to get the number of moles of PCl3.
To find the number of moles, you first need to recognize that 6.022 x 10^23 atoms make up one mole (Avogadro's number). Thus, divide 6.85 x 10^25 atoms by Avogadro's number to get the number of moles. Therefore, the number of moles of potassium in this case would be 11.4 moles.
5.0x10^25 * (1 mol / 6.022x10^23 atoms) = 83 moles of iron.
To find the number of moles in 4.06 x 10^25 molecules of sodium fluoride, you would divide the number of molecules by Avogadro's number, which is approximately 6.022 x 10^23 molecules/mol. Therefore, 4.06 x 10^25 molecules / 6.022 x 10^23 molecules/mol ≈ 67.5 moles of sodium fluoride.
The element helium does not technically have "moles", because its atomsdo not form any chemical bond with other helium atoms. Its formula unit is a single atom. Avogadro's Number, the number of formula units in a gram atomic mass, is about 6.022 X 1023. Therefore, 1.20 x 1025 atoms constitutes (1.20 X 1025)/(6.022 X 1023) or about 19.9 formula masses, to the justified number of significant digits.
The element magnesium does not form polyatomic molecules with specific numbers of atoms. Therefore, one mole ofmagnesium contains Avogadro's Number of atoms, and Avogadro's number is about 6.022 X 1023. Therefore, 1.48 X 1025 atoms contains (1.48/6.022) X10(25-23) or about 24.7 moles, to the justified number of significant digits.
Avogadro's constant expresses the number of elementary entities per mole of substance and it has the value 6.02 × 1023 . Thus there will be 2.5 times Avogadro's constant molecules of C6H12O present. And as each molecule contains 12 atoms of Hydrogen The number of atoms of Hydrogen present will be 12 times the product of 2.5 times Avogadro's constant. = 1.806 * 1025 atoms of hydrogen.
The equivalent is 154 moles.
100 times Avogadro's Number = 6.022 X 1025.
1 mole Kr = 6.022 x 1023 atoms 1.7 x 1025 Kr atoms x (1 mole Kr)/(6.022 x 1023 Kr atoms) = 28 moles Kr (rounded to two sig figs)