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2 years ago

A 0.600-L sample of a 3.75M solution of potassium iodide (KI) contains what mass of KI?

1 answer:

3 0

the molarity of a solution made by dissolving 5.67 g of potassium chloride in enough water to make 100.0 mL of solution.

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What is the energy of light with a wavelength of 468 nm? (The speed of light

marshall27 [118]

The answer for the problem is explained below.

The option for the answer is "D".

Therefore the energy of the light is 4.25 × 10^-19 J

Explanation:

Given:

wavelength (λ) = 468 nm = 468×10^-9 m

speed of light (c) = 3.00 x 10^8m/s

Planck's constant is 6.626 x 10^-34J·s

To solve:

energy of light (E)

We know,

E =(h×c) ÷ λ

E = ( 6.626 x 10^-34 × 3.00 x 10^8) ÷ 468×10^-9

E = 4.25 × 10^-19 J

Therefore the energy of the light is 4.25 × 10^-19 J

6 0

3 years ago

what is the boiling point of a 0.321 m aqueous solution of NaCl. Enter your rounded answer with 3 decimal places.

Ronch [10]

Answer:

I believe the rounded place is 100.333.

3 0

2 years ago

Read 2 more answers

Asprin can be made by adding 200.0 g of salicylinc

damaskus [11]

Correct, Was that a question.

7 0

3 years ago

Which body in our solar system has magnetic pole reversals?

sesenic [268]

the correct answer would be the sun

3 0

3 years ago

Neopentyl alcohol, (ch3)3cch2oh, cannot be dehydrated to an alkene without rearrangement. what is the chief product of dehydrati

emmainna [20.7K]

Dehydration is removal of water.

In alcohols dehydration is α-β elimination or 1,2 elimination, it means the hydroxyl group will be removed from α-carbon while the hydrogen will be removed from near by carbon.

In case of neopentyl alcohol there is no β hydrogen present on the β carbon [as shown in figure].

The only possible way for it to undergo dehydration is by rearrangement.

The process or mechanism can be understood as:

so the chief product is 2-methylbut-2-ene

7 0

3 years ago