An electric heater is used to heat 1 kg of water without energy losses. The specific heat capacity of water is 4.2 kJ kg-1K-1. What is the thermal energy taken to heat the
water from 25 °C to 95°C?

A: 294kj
B: 294j
C:136j
D:136kj

What happens to atoms and chemical bonds during a reaction?

While goofing off at the ice skating rink, a student takes off her shoes and places each of them on the ice. her friend, a hockey player, then shoots a hockey puck at each shoe. the first puck immediately comes to rest after it collides with the left shoe. the second puck rebounds after it collides with the right shoe. if each hockey puck has the same incoming speed, which shoe has greater speed after the collision? the right shoe. both shoes have the same speed. the left shoe.

Aprisoner is forced to go into one of three rooms, but he can choose which room. the first room is ablaze with fire. the second one is rigged with explosives that will go off as soon as he enters. the third contains a pair of lions who haven't eaten in years. which room should he choose to survive?