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pochemuha
3 years ago
13

How many electrons does the isotope oxygen-18 have? 6 8 10 18

Chemistry
1 answer:
Alexxandr [17]3 years ago
7 0
It has 8 electrons I the answer
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Salt in crude oil must be removed before the oil undergoes processing in a refinery. The
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Answer:

\large \boxed{0.64 \, \%}

Explanation:

Assume you are using 1 L of water.

Then you are washing 4 L of salty oil.

1. Calculate the mass of the salty oil

Assume the oil has a density of 0.86 g/mL.

\text{Mass of oil} = \text{4000 mL} \times \dfrac{\text{0.86 g}}{\text{1 mL}} = \text{3440 g}

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3. Calculate the mass of salt in the spent water

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4. Mass of salt remaining in washed oil

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5. Concentration of salt in washed oil

\text{Concentration} = \dfrac{\text{22 g}}{\text{3440 g}} \times 100 \, \% = \mathbf{0.64 \, \%}\\\\\text{The concentration of salt in the washed oil is $\large \boxed{\mathbf{0.64 \, \%}}$}

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3 years ago
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