average Atomic Mass of magnesium is 24.3 g/mole
so 24.3 X 1.56 X1021 / 6.02 X1023 = .063 grams
The mass is 6,054 g.
Approx 7.63*10^-21 grams or 7.63 zeptograms.
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
6.25 X 10^20 atoms of lead (1 mole Pb/6.022 X 10^23)(207.2 grams/1 mole Pb) = 0.215 grams of lead
Not much! 19 atoms Cu (1 mole Cu/6.022 X 1023)(63.55 grams/1 mole Cu) = 2.0 X 10-21 grams of copper ---------------------------------------
7.21 X 10^24 atoms phosphorous (1 mole P/6.022 X 10^23)(30.97 grams/1 mole P) = 371 grams of phosphorous
Approx 7.63*10^-21 grams or 7.63 zeptograms.
500,000 atoms * 1 mole Ni/6.022*1023 atoms * 58.693 grams/1 mole Ni = 4.873*10-17 grams Therefore, the mass of 500,000 atoms of nickel is about 4.87*10-17 grams
(grams) x (6.02 x 10^23) / (mass number of specific element in grams)
2.59 atoms?? Oh well. 2.59 atoms Li (1mol Li/6.022 X 10^23 )(6.941 grams Li/1mol Li ) = 2.98 X 10^-23 grams
Not that much!! 4350000 atoms Carbon (1 mole C/6.022 X 10^23)(12.01 grams/1 mole C) = 8.675 X 10^-17 grams
4.21 × 1023 atoms ÷ (6.02 × 1023 atoms) × 30.97 grams = 21.66 grams P
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
Sodium has an atomic mass of 29.990 g/mol. This means that 124 sodium atoms have a mass of 3718.76 amu, if the isotopes follow the average. To find in grams, the following must be used: 124 sodium atoms equal 2.0598 * 10-22 moles, so 124 sodium atoms have a mass of 6.177 *10-21 grams.
Gold has a molar mass of 196.96655 grams per mole. 100 grams then is equal to .508 moles which makes 3.059 E23 atoms of gold.
6.25 X 10^20 atoms of lead (1 mole Pb/6.022 X 10^23)(207.2 grams/1 mole Pb) = 0.215 grams of lead
Number of particles (atoms) =Avogadro's number (parts per mole) * [ mass (grams) / molar mass (grams per mole) ]So: N = 6.02*10+23 * 23.0 / 22.99 = 6.02*10+23atoms sodium
3.011 X 10^23 N atoms (1 mole N/6.022 X 10^23)(14.01 grams/1 mole N) 7.005 grams of nitrogen