En un recipiente de masa despreciable, se agrega 0.140 kg de hielo a -15.0°C a 0.190 kg de agua a 35.0°C. a) Si no se pierde calor al entorno, ¿qué temperatura final alcanza el sistema? b) A la temperatura final, ¿cuántos kilogramos hay de hielo y cuántos de agua líquida?

Asun-sized star will spend most of its lifetime as a: white dwarf red giant protostar main-sequence star

A248-g piece of copper is dropped into 390 ml of water at 22.6 °c. the final temperature of the water was measured as 39.9 °c. calculate the initial temperature of the piece of copper. assume that all heat transfer occurs between the copper and the water. remember, the density of water is 1.0 g/m

Acharge q experiences no net force at a particular point in space. which of the following situations described below must always be true? -there are no other charges nearby. -if there are other charges nearby, they must all have the same sign as q. -if there are other charges nearby, they must all have the opposite sign of q. -if there are other charges nearby, the total positive charge must equal the total negative charge. -none of the above