1.

2.82g of glucose molar mass 180 are dissolved in 30g of water calculate the Molarity

Answer»

Answer:

0.52 M

Explanation:

Moles of GLUCOSE dissolved

  • n = 2.82 G / (180 g/mol)
  • n = (47/3000) mol

Volume of 30 g water

  • V = Mass / Density
  • V = 30 g / (1 g/ml)
  • V = 30 ml
  • V = 30 × 10^(-3) Litres

Molarity = Moles of SOLUTE / Litres of solution

= (47/3000 mol) / (30 × 10^-3 L)

= 47/90 M

= 0.52 M



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