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Which of the following substances would show the smallest temperature change upon absorbing 2.35 kJ of heat? (MTS 2/10/2018) 27 g Fe ; cFe = 0.449 J/goC 27 g H2O ; cH2O = 4.18 J/goC 27 g ethanol ; cethanol = 2.42 J/goC

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sebassandin

Answer:

Water.

Explanation:

Hello,

Based on the formula:

[tex]Q=mCp[/tex]Δ[tex]T[/tex]

Solving for Δ[tex]T[/tex], we state that:

[tex]Δ[tex]T[/tex]=\frac{Q}{mCp}[/tex]

Now, for each substance we get:

Δ[tex]T_{Fe}=\frac{2350J}{27g*0.449J/g^0C} =193.85^0C\\[/tex]

Δ[tex]T_{H_2O}=\frac{2350J}{27g*4.18J/g^0C} =20.82^0C\\[/tex]

Δ[tex]T_{EtOH}=\frac{2350J}{27g*2.42J/g^0C} =35.97^0C\\[/tex]

We sum up that the water shows the smallest temperature change. This could be also stated by know that the iron has the highest heat capacity.

Best regards.

The study of chemicals and bonds is called chemistry. There are different types of elements and these are metals and nonmetals.

The correct answer is 35.97C.

What is temperature?

  • Temperature is a physical quantity that expresses the degree of hotness or coldness of a substance. It is the manifestation of thermal energy, present in all matter.
  • which is the source of the occurrence of heat, a flow of energy, when a body is in contact with another that is colder or hotter. The temperature should never be confused with heat.

The formula used to solve the question

[tex]Q= Mc_pT[/tex]

Place all the values and find the T.

[tex]T =\frac{2350}{27*0.499} =193.85\\T = \frac{2350}{27*4.18} =20.82\\T= \frac{2350}{27*2.42}=35.97[/tex]

Hence, the answer is mentioned above.

For more information about the temperature, refer to the link:-

https://brainly.in/question/9531558

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