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tamaranim1 [39]
3 years ago
13

Elements make up all things. What is it called

Chemistry
1 answer:
madam [21]3 years ago
3 0

Answer:

Matter

Explanation:

All matter is made up of substances called elements

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A sample of vinegar was found to have an acetic acid concentration of 0.8846 m. What is the acetic acid % by mass? Assume the de
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Answer:

5.3%

Explanation:

Let the volume be 1 L

volume , V = 1 L

use:

number of mol,

n = Molarity * Volume

= 0.8846*1

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Molar mass of CH3COOH,

MM = 2*MM(C) + 4*MM(H) + 2*MM(O)

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use:

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= 53.12 g

volume of solution = 1 L = 1000 mL

density of solution = 1.00 g/mL

Use:

mass of solution = density * volume

= 1.00 g/mL * 1000 mL

= 1000 g

Now use:

mass % of acetic acid = mass of acetic acid * 100 / mass of solution

= 53.12 * 100 / 1000

= 5.312 %

≅ 5.3%

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