3 years ago

explain how two substances can be at different temperatures but still have the same amount of thermal energy. give an example

1 answer:

3 0

Two objects having the same internal energy may have different temperatures if their masses and specific heats are different and it's possible that an object with more eternal energy may be at a lower temperature than the one with less internal energy.

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Write 0.00103 in scientific notation

Andrei [34K]

Answer:

1.03

Explanation:

You would take 0.00103 and move the decimal like this; 0001.03, we wouldn't have the zeroes in front of the one, as it can throw us off. Therefore, your answer would be 1.03.

Hope I helped! Don't hesitate to let me know if I made a mistake.

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3 years ago

A sample of an unknown compound is vaporized at 150.°C . The gas produced has a volume of 960.mL at a pressure of 1.00atm , and

IrinaK [193]

Answer:

34.02 g.

Explanation:

Hello!

In this case, since the gas behaves ideally, we can use the following equation to compute the moles at the specified conditions:

$PV=nRT\\\\n=\frac{1.00atm*0.960L}{0.08206\frac{atm*L}{mol*K}*(150+273)K} =0.0277mol\\\\$

Now, since the molar mass of a compound is computed by dividing the mass over mass, we obtain the following molar mass:

$MM=\frac{0.941g}{0.0277mol} \\\\MM=34.02g/mol$

So probably, the gas may be H₂S.

Best regards!

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Many scientist compare the parts of a cell to the parts of a factory. Do you think this comparison is fair and useful?

Fittoniya [83]

Yes. Parts of a cell work together just like stations in a factory.

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Which describes how technology has changed society?

Anton [14]

Answer:

B. People live longer than they used to

Explanation:

None of the other answers are correct.

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What is the volume of the rock in the image in mL

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Answer:

Initial volume: mL

Final volume: mL

Volume of rock: cm3

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