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Romashka [77]
3 years ago
10

When is expressing numbers using scientific notation useful?

Chemistry
1 answer:
Mamont248 [21]3 years ago
5 0

Answer:

when the numbers are very large or very small

Explanation:

good luck

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20<br> How do you solve this ?
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5 0
3 years ago
What mass of sucrose needs to be dissolved in 540 g of water in order to prepare a 15% by mass solution.
Lilit [14]

Answer:

95.3g

Explanation:

Given parameters:

Mass of water  = 540g

Percentage by mass of solution = 15%

Unknown:

Mass of sucrose = ?

Solution;

To solve this problem, we must understand that a solution is made up of solute dissolved in a solvent. A solute is the solid dissolved in another. The solvent is the is dissolving medium;

    Percentage by mass of solute in solution = \frac{Mass of solute}{Mass of solution}  x 100

Mass of solution  = mass of water + Mass of sucrose  = 540 + M

  where M is the mass of sucrose;

therefore;

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Mass of sucrose is 95.3g

5 0
3 years ago
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