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3 years ago

Andrew and Jeffrey walk together. When Andrew walks 3

Chemistry

1 answer:

atroni [7]3 years ago

4 0

Answer: 250 steps

Explanation:

The data we were given;

When Andrew walks 3 steps; Jeffrey walks 5 steps to catch up

That's is to say

Andrew's 3 steps = Jeffrey's 5 steps

Now Andrew's 150 steps = Jeffrey's X steps

So we have to find the number of steps (X) Jeffrey would have to take to catch up with Andrew.

3 = 5

150 = X

3X = 150 × 5

X = (150 × 5) / 3

X = 750 / 3

X = 250

Therefore Jeffrey would need 250 steps to catch up with Andrew.

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A 2.0 mol ideal gas system is maintained at a constant volume of 4.0 L. If 100 J of heat is added, what is the work done on the

LuckyWell [14K]

Answer:

Work done on the system is zero , hence no work is done since the process is isochoric. There is no work done if the volume remains unchanged. (Though the temperature rises, work is only accomplished when the volume of the gas changes.)

Explanation:

ISOCHORIC PROCESS - An isochoric process, also known as a constant-volume process, isovolumetric process, or isometric process, is a thermodynamic process in which the volume of the closed system undergoing the process remains constant through the process. The heating or cooling of the contents of a sealed, inelastic container is an example of an isochoric process. The thermodynamic process is the addition or removal of heat, the closed system is established by the isolation of the contents of the container, and the constant-volume condition is imposed by the container's inability to deform. It should be a quasi-static isochoric process in this case.

Hence , the work done in the system is zero.

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3 years ago

Substances that absorb energy in the form of heat are

Yanka [14]

Answer:

Substances that absorb energy in the form of heat are

b)endothermic.

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What uses lines of bubbles in a superheated liquid to track particles?

Dmitry [639]

Is bubble chamber one of your choices? Bubble chamber sounds like a good fit for the question.

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Explain why Potassium is more reactive than lithium?

Elis [28]

Explanation:

Potassium has an atomic radii that is greater than that of lithium that is why potassium is more reactive than lithium.

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Sodium hydride reacts with excess water to produce aqueous sodium hydroxide and hydrogen gas:NaH (s) H2O (l) → NaOH (aq) H2 (g)A

Anuta_ua [19.1K]

NaH(s)+ H2O (l)=>NaOH(aq)+H2(g)

You want to calculate the mass of NaH, I assume. Otherwise, the question isn't clear. It simply says calculate the mass(??)

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n = 0.0385 moles H2

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