If you were presented with 2 l of a 2 m sucrose stock solution, how many grams of sugar would be in a 100 ml aliquot?

Answer;

68.46 g of sucrose in 100mL

Solution and explanation;

Given 2L of 2 mol/L sucrose solution

Moles = concentration x volume

Therefore; The number of moles in this solution is 2 L x 2 mol/L = 4 mol

The molecular mass of sucrose is 342.3 g/mol.

Mass = Moles × Molecular weight

Therefore the mass of sucrose in 2 L;

  = 4 mol x 342.3 g/mol = 1369.2g

but; 2L/20 = 100 mL

= 1369.2/20 = 68.46

Hence; you would have 68.46 g in 100 mL

geosphere and hydrosphere.

this is because the geosphere has to do with geological events, while the hydrosphere controls all water on earth.

може ли да зареждате повече информация, моля