1 point Choose the correct statement as it relates to the energy of a system and

the heating curve below.

140

120

100

80

Temperature (C)

60

40

20

0

-20

Heat added

O During a plateau, the internal energy of the system is being lost

O During a plateau, the internal energy of the particles increases

O When the curve rises, the substance changes state

O As the curve rises, energy is not conserved

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explanation:

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explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

            and  

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be and .  

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.  

the transfer of heat by electromagnetic radiation is called thermal radiation . it is usually carried out by electromagnetic waves in an energy range just below the visible spectrum, which is the infrared range.

so the answer would be radiation.

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