Consider the following four formulas: CO2, B4H10, CO, C4H4O2. Which of these formulas could be only an empirical formula, only a molecular formula, either a molecular or an empirical formula?

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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you need to stop taking that class