avogadro's constant is the number of atoms (or molecules, as in the case of compounds) contained in a mole of a substance. roughly, then, in 4 moles of gold there are 4 x 6.02 x 10 to the 23rd power atoms or two septillion, four hundred eight sextilllion atoms. (2,408,000,000,000,000,000,000,000)
see also: http://en.wikipedia.org/wiki/Avogadro_constant
There are 2.4088 x 1024 atoms of silver in 4 moles, and it is four times of the Avogadro's constant.
44 moles of atoms
4 moles of oxygen atoms are present in 4 moles of H2O
The answer is 4 moles.
Since 14 (4+10) moles of P4O10 contains 4 moles of Phosphorus, 8 moles of P4O10 will contain :: (8 x 4)/14 = 2.286 moles of Phosphorus
4
44 moles of atoms
8
4 moles of oxygen atoms are present in 4 moles of H2O
0.4965 moles rounded to 4 significant figures
1 mole of water is 18g. 36g of water is thereforeequivalent to 2 moles. 2 moles of water contains 4 moles of hydrogen and 2 moles of oxygen and so there are6 moles of atoms in 2 moles of water. 6 moles of atoms x (3.6x10^24) = 36.1x10^24 atoms
1 mol has 6,022 140 857.10e23 atoms (The number of Avogadro).4 moles of sodium have 24,088 563 428.10e23 atoms.
The answer is 4 moles.
Since 14 (4+10) moles of P4O10 contains 4 moles of Phosphorus, 8 moles of P4O10 will contain :: (8 x 4)/14 = 2.286 moles of Phosphorus
4
C2H3NO could be either methyl isocyanate or glycolonitrile. They both share this molecular formula, through their structures are different. Since there are a total of 7 atoms in one molecule of C2H3NO, 4 moles of C2H3NO would have 28 moles of atoms.
The mass of 4 moles of fluorine F atoms is 151,98 g (because fluorine is a diatomic element).
The molecular formula for sulfuric acid is H2SO4. This shows that each molecule contains exactly 4 oxygen atoms. Therefore, 0.750/4 or 0.1875 moles of sulfuric acid contain 0.750 moles of oxygen atoms.