Peter conducted the investigation below to find the energy contained in a peanut. If the burning peanut raised 20 g of water from 18°C to 22°C, how much energy did it contain? Use the equation E = m × c × ΔT to find your answer. Assume that c (the specific heat capacity of water) is 4181 J/kg. Give your answer to two decimal places.

334.48

Explanation:

delta T = 4 degrees

m = 20 grams of water

c = 4.181 J / gram

E = 20 * 4.181 * 4

E = 334.48 Joules

Remember to change c to Joules / gram

4181 j / kg * 1 kg / 1000 grams = 4.181 j / gram

well

explanation:

desert perennials often survive by remaining dormant during dry periods of the year, then springing to life when water becomes available. most annual desert plants germinate only after heavy seasonal rain, then complete their reproductive cycle very quickly.