0,263 mole of Ag is equal to 28,37 g.
3.76 grams silver (1 mole Ag/107.9 grams)(6.022 X 10^23/1 mole Ag) 2.10 X 10^22 atoms of silver ---------------------------------------
3.68 grams silver (1 mole Ag/107.9 grams)(6.022 X 10^23/1 mole Ag) = 2.05 X 10^22 atoms of silver -----------------------------------------
Using your molar mass. 0.0001 grams silver (1 mole Ag/108 grams)(6.022 X 1023/1 mole Ag) = 5.58 X 1017 atoms of silver =====================
0.84 lb silver (454 grams/1 lb)(1 mole Ag/107.9 grams)(6.022 X 10^23/1 mole Ag) = 2.1 X 10^24 atoms of silver
There are 107.9 grams in one mole of pure silver. 107.9 a.m.u. is the average mass of isotopes of the element silver Answer to another (= not this one) question: The atomic number is the number of grams in a mole of any element. Hydrogen has an atomic number of 1 so a mole of hydrogen (okay, a half-mole of H2) weighs 1 gram. [ Silver is not Hydrogen ! and an atom is not a molecule]
Since there are 107.8682 grams of Silver per mole, then 129 grams of Silver is 1.2 moles of Silver.
10.8 grams silver (1 mole Ag/107.9 grams)(6.022 X 1023/1 mole Ag) = 6.03 X 1022 atoms of silver =====================
3.76 grams silver (1 mole Ag/107.9 grams)(6.022 X 10^23/1 mole Ag) 2.10 X 10^22 atoms of silver ---------------------------------------
3.68 grams silver (1 mole Ag/107.9 grams)(6.022 X 10^23/1 mole Ag) = 2.05 X 10^22 atoms of silver -----------------------------------------
2.3 X 1024 atoms / 6.022 X 1023 atoms/mole X 107.87 gm/mole of silver = 412 grams
Using your molar mass. 0.0001 grams silver (1 mole Ag/108 grams)(6.022 X 1023/1 mole Ag) = 5.58 X 1017 atoms of silver =====================
0.84 lb silver (454 grams/1 lb)(1 mole Ag/107.9 grams)(6.022 X 10^23/1 mole Ag) = 2.1 X 10^24 atoms of silver
4.003 grams
There are 107.9 grams in one mole of pure silver. 107.9 a.m.u. is the average mass of isotopes of the element silver Answer to another (= not this one) question: The atomic number is the number of grams in a mole of any element. Hydrogen has an atomic number of 1 so a mole of hydrogen (okay, a half-mole of H2) weighs 1 gram. [ Silver is not Hydrogen ! and an atom is not a molecule]
Na2SO4 10.0 grams Na2SO4 (1 mole Na2SO4/142.05 grams)(2 mole Na/1 mole Na2SO4)(22.99 grams/1 mole Na) = 3.24 grams of sodium -------------------------------
22 moles AgF (126.9 grams/1 mole AgF) = 2791.8 grams of silver fluoride.
The answer is 165,23 grams.