15.

a 250-g pot of water at 40o c is placed on a stove. how much heat is required to change this water to

steam at 100o c? specific heat of water = 1.0 cal/goc. latent heat of vaporization, lv = 540 cal/g.

group of answer choices

150,000 calories

147,500 calories

95,600 calories

310,000 calories

60,000 calories

What did the pattern of earthquakes in the wadati-benioff seafloor zones show scientists? a.) earthquakes occur where the ocean floor reaches its highest temperatures. b.) many earthquakes take place 700 kilometers below the seafloor. c.) slabs of ocean floor return to the mantle in subduction zones. d.) ocean - trenches cause earthquakes.

The process by which liquid water changes into water vapour is called what ?

Which statement about new zealand’s first inhabitants is not true? a. the maori have no political power today. b. the origin of the maori is in dispute by scholars. c. the maori are trying to reassert their claims to the land. d. the maori lost most of their land in the 1800s to the british colonists. (gradpoint)