5.0x10^25 * (1 mol / 6.022x10^23 atoms) = 83 moles of iron.
The answer is 83 moles.
A mole of potassium consists of Avogadro's number of atoms. Therefore 6.85 X 1025 atoms comprises (6.85 X 1025)/(6.022 X 1023) or 114 moles, to the justified number of significant digits.
The answer is 3,587 moles.
7.30 C2H6O (6 moles H/1 mole C2H6O)(6.022 X 1023/1 mole H) = 2.64 X 1025 atoms of hydrogen =====================
Divide it by Avogadro constant.There are 0.0088 moles
Quite a few. 6.32 X 10^25 atoms sodium (1 mole Na/6.022 X 10^23) = 105 moles of sodium
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.
20.4 MOLES OF PCl3
738 grams iron are equivalent to:- 12,626 moles- 76.10e23 atoms
A mole of potassium consists of Avogadro's number of atoms. Therefore 6.85 X 1025 atoms comprises (6.85 X 1025)/(6.022 X 1023) or 114 moles, to the justified number of significant digits.
100 times Avogadro's Number = 6.022 X 1025.
9,003 x 1023 atoms of iron correspond to 1,495 moles.
0.4965 moles rounded to 4 significant figures
The answer is 3,587 moles.
7.30 C2H6O (6 moles H/1 mole C2H6O)(6.022 X 1023/1 mole H) = 2.64 X 1025 atoms of hydrogen =====================
Divide it by Avogadro constant.There are 0.0088 moles
8.30 moles (NH4)2S (8 moles H/1 mole (NH4)2S)(6.022 X 1023/1 mole H) = 3.99 X 1025 atoms of hydrogen ========================
1 mole of CO2 has 1 mole of carbon atoms and 2 moles of oxygen atoms. So, 25 mole of CO2 has 25 moles of carbon atoms and 50 moles of oxygen atoms.