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3 years ago

HOLMIUM

Chemistry

1 answer:

Sophie [7]3 years ago

8 0

Answer:

1. The graph where x axis and y axis are present is called coordinate.

4. 18

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A container with 3.0 moles of gas has a volume of 60.0L with a temperature at 400.K what is the pressure

iris [78.8K]

Answer: P= 1.64 atm

Explanation: solution attached.

Use Ideal gas law

PV= nRT

Derive for P

P= nRT/V R= 0.08205 L.atm/mol.K

Substitute the values.

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3 years ago

The tosylate of (2R,3S)-3-phenylbutan-2-ol undergoes an E2 elimination on treatment with sodium ethoxide. Draw the structure of

andrezito [222]

Answer:

(R)-but-3-en-2-ylbenzene

Explanation:

In this reaction, we have a very strong base (sodium ethoxide). This base, will remove a hydrogen producing a double bond. We know that the reaction occurs through an E2 mechanism, therefore, the hydrogen that is removed must have an angle of 180º with respect to the leaving group (the "OH"). This is known as the anti-periplanar configuration.

The hydrogen that has this configuration is the one that placed with the dashed bond (red hydrogen). In such a way, that the base will remove this hydrogen, the "OH" will leave the molecule and a double bond will be formed between the methyl and the carbon that was previously attached to the "OH", producing the molecule (R) -but-3- en-2-ylbenzene.

See figure 1

I hope it helps!

6 0

3 years ago

A reaction occurs when solid X is placed into solution Y. As a result, the temperature of the new solution increases by 3°C. The

Hoochie [10]

Answer:Increased the number of molecular collisions and increased the reaction rate

Explanation:

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3 years ago

For water, the value for the latent heat of vaporization is 6.8 times greater than the latent heat of fusion. Imagine we were ad

Tom [10]

Answer:

Time of vaporization = 0.588 minutes

Explanation:

The latent heat of fusion is the heat required to change the substance from solid (ice) to liquid completely, without further increase in temperature.

The latent heat of vaporization is the heat required to change a liquid to gas completely, without an increase in temperature.

Latent heat of vaporization = 6.8 times Latent heat of fusion

This means that the time it takes for the latent heat of vaporization to complete vaporization is 6.8 times lesser than the time it takes for the latent heat of fusion to complete fusion

Time of vaporization = 6.8 times lesser than time of fusion

Time of vaporization = (time of fusion) ÷ 6.8

where: Time of fusion = 4 minutes

∴ Time of vaporization = 4 ÷ 6.8

Time of vaporization = 0.588 minutes

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3 years ago

You have decided to do a science fair project involving plants. Which of the following represents a well-stated hypothesis?

marysya [2.9K]

The correct answer should be c

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3 years ago

Read 2 more answers