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Molality is defined as moles of solute per kg of solvent. Thus, 3 moles/6 kg = 0.5 moles/kg = 0.5 m
Assuming pure calcium carbide: CaC2 + 2 H2O → C2H2 + Ca(OH)2 Molar mass of CaC2 = 64.1 Molar mass of water =18 ∴ no mol of CaC2 = 492/64.1=7.68mol ∴ no mol H2O =2*7.68=15.35mol ∴mass H2O = 15.35*18 = 276.3g of water
Mol is a cocentration unit !
Molarity is a measure of the concentration of a solution, and therefore cannot be said to be just moles.It is in fact moles per litre (mol/L), or molars.
The molarity is 2 mol/L.
This molality is 90,08 g/kg.
4 mol/0.800 kg
2m
2 m is the molarity of a solution that has 6 mol of CaCl2 in 3 km of water.
3mol/6kg
2 m
3mol/6kg
0.33 mol/kg
0.33 mol/kg
Molality = moles of solute / kilograms of solventm = 5.10 / 4.47m = 1.14 molal
4 mol over 0.800 kg
0.33 mol/kg (apex)