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Anna007 [38]
2 years ago
12

I need help with science pls help me

Chemistry
1 answer:
ryzh [129]2 years ago
6 0

Answer:

Explanation:

6. When insulating materials rub against each other, they may become electrically charged .

7. Charging by conduction involves the contact of a charged object to a neutral object.

8. Grounding is the process of removing the excess charge on an object by means of the transfer of electrons between it and another object of substantial size.

9. Grounding is the process of removing the excess charge on an object by means of the transfer of electrons between it and another object of substantial size.

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True or false the si in sih4 does not follow the octet rule because hydrogen is in an unusual oxidation stat
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The least electronegative element from among the following is
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Specific Heat Material Copper Aluminum Gold Pyrex Specific Heat (J/g °C) 0.385 0.902 0.129 0.75 Material Water Ice Olive Oil Air
zimovet [89]

Explanation:

  • It is known that the amount of heat necessary to raise the temperature of 1 gram of a substance by 1^{o}C is known as specific heat.

Since,     q = mC \Delta T

So, larger is the specific heat of a substance less will be the change in its temperature.

Therefore, olive oil has less specific heat as compared to water. This means that olive oil would get hotter.

  • Similarly, the specific heat of gold is lesser than the given materials or metals. Hence, gold will requires less heat to rise its temperature.

As a result, water present in gold will heat readily.

  • As the relation between heat and specific heat is as follows.

              q = mC \Delta T

Therefore, calculate the amount of heat required by the water as follows.

                 q = mC \Delta T

                    = 100 g \times 4.18 J/g^{o}C \times (100 - 20)^{o}C

                    = 33440 J

or,                 = 33.44 kJ               (as 1 kJ = 1000 J)

Thus, 33.44 kJ heat would it take to raise the temperature of 100.0 g of water from 20.0^{o}C to 100.0^{o}C.

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