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marshall27 [118]
3 years ago
9

Which element contains the same number of energy levels as oxygen?

Chemistry
1 answer:
natima [27]3 years ago
3 0

Answer: this question is 3 days ago? Omg

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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
jenyasd209 [6]

Answer:

5.3%

Explanation:

Let the volume be 1 L

volume , V = 1 L

use:

number of mol,

n = Molarity * Volume

= 0.8846*1

= 0.8846 mol

Molar mass of CH3COOH,

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

= 2*12.01 + 4*1.008 + 2*16.0

= 60.052 g/mol

use:

mass of CH3COOH,

m = number of mol * molar mass

= 0.8846 mol * 60.05 g/mol

= 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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3 years ago
What are slime Molds?
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Answer:

Slime mold or slime mould is an informal name given to several kinds of unrelated eukaryotic organisms that can live freely as single cells, but can aggregate together to form multicellular reproductive structures. Slime molds were formerly classified as fungi but are no longer considered part of that kingdom.

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Pedigree charts use shaded symbols to show organisms that have a particular trait, such as a defective gene, being traced in the
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Males are represented my a square
if he is affected by a defective gene he should show a shaded square that differs from normal males just like this■
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Ions form as a result of uneven charge distribution between the nucleus and the electron cloud. TRUE OR FALSE
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Answer:

true

Explanation:

true

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Please help meee 1st question​
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360 seconds?

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