How much more energy is needed to change 1.5 kg of ice into liquid water than is needed to change 1.5 kg of liquid water into water vapour without a change in temperature? (Specific latent heat of vaporisation of water is 2 260 000 J/kg, specific latent heat of fusion of water is 2 260 000 J/kg)

For one history test, keith had to answer 40 questions. of these 40 questions, keith answered 28 of them correctly. what percent did keith get on his history test? round your answer to the nearest tenth if necessary

Do more republicans (group a) than democrats (group b) favor a bill to make it easier for someone to own a firearm? two hundred republicans and two hundred democrats were asked if they favored a bill that made it easier for someone to own a firearm. how would we write the alternative hypothesis?

Complete the synthetic division problem below.what is the quotient in polynomial form 2/16 -16