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kati45 [8]
3 years ago
8

How many grams of boiling water must be added to an insulated cup containing 19 grams of ice, at 0oC, to completely melt the ice

Chemistry
1 answer:
schepotkina [342]3 years ago
8 0

Answer:

1900grams of boiling water

Explanation:

0,c=19

100,c=19×100

1900grams

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An experiment reveals that 125.0 grams of an unknown metal increases in temperature from 22.0 oC to 43.6 oC upon absorbing 640 j
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Answer:

                     Cp  =  0.237 J.g⁻¹.°C⁻¹

Explanation:

                      Amount of energy required by known amount of a substance to raise its temperature by one degree is called specific heat capacity.

The equation used for this problem is as follow,

                                                 Q  =  m Cp ΔT   ----- (1)

Where;

           Q  =  Heat  =  640 J

           m  =  mass  =  125 g

           Cp  =  Specific Heat Capacity  =  <u>??</u>

           ΔT  =  Change in Temperature  =  43.6 °C  -  22 °C  =  21.6 °C

Solving eq. 1 for Cp,

                                Cp  =  Q / m ΔT

Putting values,

                                Cp  =  640 J / (125 g × 21.6 °C)

                                Cp  =  0.237 J.g⁻¹.°C⁻¹

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3 years ago
5. A plane starting from rest is accelerated to its takeoff velocity of 75 m/s during a 5
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Answer:

answer is 14

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2 years ago
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Whereas beaker a is at lowest temperature (30°C) , therefore the reaction in beaker a would be slowest .

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