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Deffense [45]
3 years ago
14

How many grams of glucose are needed to prepare 400. ml of a 2.0%(m/v) glucose solution?

Chemistry
2 answers:
tatuchka [14]3 years ago
8 0
8 grams

A <span>2.0%m/v</span> (mass/volume) solution is 2 grams of solute in 100 mL of final solution.

So for 400 mL of solution, you require

<span>400mL⋅<span>2 g<span>100mL</span></span>=<span>8 g</span></span>

erma4kov [3.2K]3 years ago
4 0

Answer:8 grams of glucose are needed to prepare 400. ml of a 2.0%(m/v) glucose solution.

Explanation:

Volume of the solution = 400 mL

Mass by volume percentage of the solution = 2%

Mass of the glucose = m

The mass by volume percent is given by formula ;

(m/v\%)=\frac{\text{mass of the solute}}{\text{Volume of the solution}}\times 100

2\%=\frac{m}{400}\times 100

m = 8 g

8 grams of glucose are needed to prepare 400. ml of a 2.0%(m/v) glucose solution.

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