In the balanced reaction below, what is the mole ratio comparing iron (fe) and oxygen gas (o2)? 4fe + 3o2 --> 2fe2o3 question options: 4: 2 1: 3 2: 3 4: 3

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.

In apex! a liquid heated beyond a certain temperature becomes

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