Water has two hydrogen atoms, and one oxygen atom. Look up their atomic weights, add them all up, and you will get the number of grams per mol.
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The molarity is 2 mol/L.
-5.58 C
(kb=0.51degrees celcious/(mol/kg) for water and i=2 for NaCl)
2.2 mol water = 2.2 (mol) * 18 (g/mol) water = 39.6 (mol*g/mol) = 40 g18 g/mol = mol mass of H2O = 2*H + 1*O = (2*1 + 16) g/mol
44.96 (g/mol Sc) * 62 (mol) = 2788 g = 2.8 kg Scandium