21. How many calories of heat are absorbed when 50 grams of water at 100°C are completely vaporized? (Heat of vaporization = 540 cal/g)
А.590
B.5400
C. 27000
D. 54000
+

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.

: )

no starving yourself won't it will make you lose more weight what you need to do is find out what foods make you gain weight like bread and meats with fat on