HgNO3 + K2CrO4 => KNO3 + Hg2Cro4 *
Your answer
Only the coefficient ratio

im pretty sure its b

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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answer; the numbers of valence electrons in the acetic acid molecule (ch3co2h) is 24;