The height of a cylinder is measured 4 times. A. What is the average height?
B. What is the standard deviation?

3.18 cm
3.22 cm
3.17 cm
3.23 cm

This question is about electrolysis. metal spoons can be coated with silver. this is called electroplating. suggest one reason why spoons are electroplated?

This image is an example of a(n) a) atom. b) compound. c) mixture. d) molecule.

28. which is not a reason that water is used to store spent fuel rods from nuclear power plants? water increases the speed of the chain reaction in the fuel rods. water protects nuclear power plant workers from the high temperature and radiation of the fuel rods. water acts as a radiation shield to reduce the radiation levels. water cools the spent rods. salts action