20) Determine the number of ions contained in 1 mole of sodium sulfate.
A)
1.204 x 1024 ions
B)
1.807 x 1024 ions
2.007 x 1023 ions
D)
6.022 x 1023 ions

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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