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3 years ago

14

describe characteristics of different climate zones as they relate to latitude,elevation,and proximity to bodies of water. (scie

nce)

1 answer:

g100num [7]3 years ago

7 0

They or on the southern hysteric watch it on youtube (latitude and longitude song 1 direction remix by the history teachers)

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Salt in crude oil must be removed before the oil undergoes processing in a refinery. The

irina1246 [14]

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.

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

2. Calculate the mass of salt in the salty oil

$\text{Mass of salt} = \text{3440 g} \times \dfrac{\text{5 g salt}}{\text{100 g oil}} = \text{172 g salt}$

3. Calculate the mass of salt in the spent water

$\text{Mass of salt} = \text{1000 g water} \times \dfrac{\text{15 g salt}}{\text{100 g water}} = \text{150 g salt}$

4. Mass of salt remaining in washed oil

Mass = 172 g - 150 g = 22 g

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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Where y and x are concentrations of the peptide in the extract and raffinate, respectively in g/L. It is desired to extract at l

zubka84 [21]

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Assuming a total pressure of 9.3 atmatm , what is the partial pressure of helium in the mixture of 98%% helium and 2.0%% oxygen

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Explanation:

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Which statement correctly describes the Ka of a weak acid?

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The answer is D) <span>The Ka is small, and the equilibrium favors reactants.

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Which substance has Delta.Hf defined as 0 kJ/mol?

miskamm [114]

Answer:

the answer is 02 (g)

Explanation:

hope this helps :)

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3 years ago