Quite a few!
5.13 kilograms sodium (1000 grams/1 kg)(1 mole Na/22.99 grams)
= 223 moles of sodium
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The numbers of moles in 100 kg of sodium is 4 349,76.
First calculate the moles of sodium moles = 500 g/ 23 = 21.739 ... Remember the Avogadro Number. 6.022 x 10^(23) is the number of atoms in one mole Hence , multiplying 6.022 x 10^(23) X 21.739... = 1.309 x 10^(25) atoms in 0.5 kg of sodium .
12,4439 kg of gold contain 63,177 moles.
2.70 m = 2.70 moles/kg solvent3250 g solvent = 3.25 kg solvent2.70 moles/kg x 3.25 kg = 8.775 moles NaNO3 = 8.78 moles NaNO3 (3 significant figures)
The answer is 30,151 kg.
This depends on the specific element or compound.
Molality denotes the number of moles of solute per kilogram of solvent. The molar mass for sodium bromide is 102,9 g/mol. nNaBr= 16,6 g/ 102,9 g/mol = 0,16 moles The concentration of the solution is therfore = 0,16 moles/ 1,330 kg = 0,12 molal -While the above is true it should 0.121 molar due to significant digits (just a technicality)
5.00 kg of Cu is equivalent to 78,68 moles.
Molality is expressed as moles solute/kg solvent. Moles of solute = 2. Kg solvent = 6.Molality = 2 moles/6 kg = 0.33 molal
The solution is 0,25 M.
25,3 moles of potassium sulfate hva a mass of 4,4409 kg.
4,35 moles of silver is equal to 469 g (0,469 kg).