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kifflom [539]
3 years ago
5

Which combination of elements below will bond ionically and in the same

Physics
1 answer:
Zinaida [17]3 years ago
3 0
Sodium and chlorine
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In a classroom, 4 out of every 6 students are female. If there are 27 students, how many of them are female?
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Answer:

16 male students, 11 female students

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2 years ago
In a certain time interval, natural gas with energy content of 19000 J was piped into a house during a winter day. In the same t
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Explanation:

Since, it is mentioned the there occurs no change in the temperature. This also means that there will occur no change in thermal energy of the system.

Hence, \Delta E = 0. And, as \Delta E = 0 then there will be no work involved. This means that total energy added to the house will return to the outside air as heat.

Therefore,

                   Q = -(19000 J + 2000 J)

                       = -21000 J

or,    |Q| = 21000 J

Thus, we can conclude that the magnitude of the energy transfer between the house and the outside air is 21000 J.

5 0
3 years ago
Identify characteristics of energy from the Sun. Check all that apply.
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Almost all of the energy on Earth comes from the Sun

The energy in fossil fuels originally came from the Sun

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Explanation:

The sun is the ultimate source of energy on earth and even the whole of the solar system. The sun drives and powers all external processes on earth. It produces its energy from the nuclear fusion of lighter nuclei into heavier ones.

  • Almost all of the energy on earth comes from the sun. A few component of the energy on the surface comes from the internal heat engine.
  • The energy of fossil fuels originally came from the sun. This is because, plants stores the energy in the process of photosynthesis. When they die and the energy is not released, the energy is stored as fossil fuels.
  • Plants in the process of photosynthesis converts the energy. Here green plants combines carbon dioxide and water in the presence of sunlight.

Learn more:

Convection brainly.com/question/1140127

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Which is the oldest of the following sports
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“The term significant figures refers to the number of important single digits (0 through 9 inclusive) in the coefficient of an expression in scientific notation . The number of significant figures in an expression indicates the confidence or precision with which an engineer or scientist states a quantity.”
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3 years ago
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