2 mol 1.204*10^24=2*6.02*10^23 so the amount is 2 mols
Ni(OH)2 1 atom of nickel 2 atoms of oxygen 2 atoms of hydrogen -------------------------------+ total atoms = 5 atoms
1 g x ( 1 mole / 58.7 g ) x ( 6.022 x 1023 atoms / mole) = 1.03 x 1022 atoms
The compound name for NiCl2 is Nickel Chloride. It is comprised of one atom of Ni, Nickel, and two atoms of Chlorine which becomes a Chloride.
9.3*10^15 atoms nickel = ? grams take the number of atoms, divide by one mole and then times by the molar mass of nickel 9.3*10^15atoms /6.02*10^23 atom/mol * 58.69 g/mol =9.1*10^-7 grams
cobalt, gallium, helium, silver, nickel
Ni(OH)2 1 atom of nickel 2 atoms of oxygen 2 atoms of hydrogen -------------------------------+ total atoms = 5 atoms
He
Nickel Hydroxide is Ni(OH)2. So 1 molecule of Nickel Hydroxide contains 2 oxygen atoms.
same no of protons
1 g x ( 1 mole / 58.7 g ) x ( 6.022 x 1023 atoms / mole) = 1.03 x 1022 atoms
Nickel's atomic number is 28, which means that all nickel atoms contain 28 protons in their nuclei.
Nickel is 58.7g/mol, so 26.4/58.7=0.45mol, and that times 6.02x1023 (Avogadro's number) gives you 2.71x1023 atoms of nickel.
2 i think
First you have to find out the number of moles of Nickel in 0.63g. Do this by dividing 0.63 by the molecular weight of Nickel; 58.69g. 0.63/58.69= 0.01 mol (2 d.p.) In one mole there are 6.02x1023 atoms. Therefore in 0.01 moles of Nickel there will be: 0.01 x 6.02x1023 = 9.15x1015 atoms.
The compound name for NiCl2 is Nickel Chloride. It is comprised of one atom of Ni, Nickel, and two atoms of Chlorine which becomes a Chloride.
The atoms in iron are little groups that act like tiny magnets also found in nickel and cobalt!
9.3*10^15 atoms nickel = ? grams take the number of atoms, divide by one mole and then times by the molar mass of nickel 9.3*10^15atoms /6.02*10^23 atom/mol * 58.69 g/mol =9.1*10^-7 grams