Respuesta :

vful
 Heat energy = 140 J = 20/1000 * sp.heat * ( change in temp.) 
= 20/1000 * 139 * temp. increase 
= 2.78 * temp. incr. 
Increase in temp = 100/2.78 = 35.97 K. 
to raise the temp.of 20 g of water by 35.97 K 
= 20/1000 * 4186 * 35.97 
= 3011.5 J

Otras preguntas