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2 years ago

Calculate the energy in joules of microwave radiation having a wavelength of 0.0127 meters

Chemistry

1 answer:

LenKa [72]2 years ago

5 0

Answer:

0.004445

Explanation:

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How many moles are in 13.0 grams of water

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13.0/18=.07222222

sig figs: 0.722 mole of water

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3 years ago

What is the correct name for the molecular compound n2s4?

blsea [12.9K]

Dinitrogen tetrasulfide

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3 years ago

1. What is the relationship between ecological succession and equlibrium in an ecosystem?

alexandr1967 [171]

Answer:

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3 years ago

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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3 years ago

An insoluble base reacts with an acid to form a salt

Alex17521 [72]

Answer: you can use a strainer

Explanation:

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3 years ago