How does refrigeration keep food fresher?
1) cold air surrounds food and slows the spoiling process.
2)it speeds up reaction rates within stored food.
3)it slows down reaction rates within stored food.
4) it causes food molecules to stop vibrating.

If you chip a tooth, most likely you will go to the dentist to have the missing material filled in. currently the material used to fill in teeth is a polymer that is flexible when put in, yet is hardened to the strength of a tooth after irradiation with blue light at a wavelength of 461 nm. what is the energy in joules for a photon of light at this wavelength?

An animal cell loses the ability to convert energy stored in food to energy that the cell can use. which of the cell's organelles has stopped working? a.the mitochondria b.the nucleus c.the vacuoles d.the endoplasmic reticulum

What is the final temperature after 840 joules is absorbed by 10.0g of water at 25.0c