The mass of tin is slightly more than the relative Atomic Mass of tin (118.71). There will be 6.037*10^23 atoms.
The number of atoms is 0,035.10e23.
This mass is 28,8.10e-20 g.
41.7 grams tin (1 mole Sn/118.7 grams)(6.022 X 10^23/1 mole tin )(1 mole tin atoms/6.022 X 10^23) = 0.351 moles of tin atoms in pure tin cup ------------------------------------------------------
The number of atoms of lead is 6,68.10e23.
119 grams of uranium is equivalent to 0,5 moles.
The number of atoms is 0,035.10e23.
This mass is 28,8.10e-20 g.
41.7 grams tin (1 mole Sn/118.7 grams)(6.022 X 10^23/1 mole tin )(1 mole tin atoms/6.022 X 10^23) = 0.351 moles of tin atoms in pure tin cup ------------------------------------------------------
Tin (Sn), atomic #50 has a molar mass of 118.71 g/mol
118.7 is close to the 118.96 grams per mole (mass) of tin. So we can call that one mole. 1 mole is equal to 6.022x10^23 (avogadro's number which is the number of atoms per mole of an element).
The number of atoms of lead is 6,68.10e23.
119 grams of uranium is equivalent to 0,5 moles.
49.1740 g (6.02 x 1023 atoms) / (91.22 g) = 3.25 x 1023 atoms
149 g of calcium contain 22,39.10e23 atoms.
6,687.1023 chlorine atoms
27,30.10e23 atoms
The number of atoms of lead is 6,68.10e23.