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

The hypothetical island country of gilder lies in the mediterranean sea off the coast of france. demographers have studied gilder for the past 50 years. at the beginning of the study, gilder had a population of 20 million. the demographers have measured birth and death numbers, as well as immigration and emigration numbers, as shown in the data table. from the data, calculate the population of gilder for each 10-year period by filling in the population (no) and population (nt) columns in the data table. use this formula to do your calculations: population size: nt = no + (b + i) – (d + e)initial population = 20,000,000