If 901 J of heat is available, how many grams of iron (specific heat = 0.45 J/g･°C) can be heated from 22.5°C to 120.0°C?

Several kinds of bears are found on earth. most bears are brown or black, but one type of bear, the polar bear, is white. what process led to this difference in fur color? explain your answer.

In a copper wire, a temperature increase is the result of which of the following

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?