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pashok25 [27]
3 years ago
13

At 8:00, the temperature was 6 degrees Celsius (°C). Three hours later, the temperature was -13°C.

Chemistry
2 answers:
elena55 [62]3 years ago
7 0

Answer:

It changed by -7 degrees Celsius.

Explanation:

erastovalidia [21]3 years ago
4 0

it became 6 degree celcius more

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Which of the following statements does not describe the structure of an atom?
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the last one is wrong

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A shampoo has a pH of 8.59. What is the [H3O+] in the shampoo?
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2.57 e-9

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how much energy would it take to heat a section of the copper tubing that weights about 660.0 gram, from 12.93 degree Celsius to
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                      Q  =  2647 J

Explanation:

                    Specific heat capacity is the amount of energy required by one Kg of a substance to raise its temperature by 1 °C.

In thermodynamics the equation used is as follow,

                                                 Q  =  m Cp ΔT

Where;

           Q  =  Heat  =  ?

           m  =  mass  =  660 g

           Cp  =  Specific Heat Capacity  =  0.3850 J.g⁻¹.°C⁻¹

           ΔT  =  Change in Temperature  =  23.35 °C - 12.93 °C  =  10.42 °C

Putting values in eq. 1,

                            Q  =  660 g × 0.3850 J.g⁻¹.°C⁻¹ ×  10.42 °C

                            Q  =  2647 J

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The answer is d the inflation scale
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3 years ago
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