School / science


I like chemistry. But I’ve been sick for two days, and that means I’m scrambling to finish my homework for today’s class, and… have no time to post here.

So, if you want to see an example:

Warm objects emit electromagnetic radiation in the infrared region. Heat lamps employ this principle to generate infrared radiation. Water absorbs infrared radiation with wavelengths near 2.90 picometers. Suppose this radiation is absorbed by the water and converted to heat. A 1.00 L sample of water absorbs infrared radiation, and its temperature increases from 20.0 deg C to 30.0 deg C. How many photons of this radiation are used to heat the water?

Have fun!