If 89.6 joules of heat 20.0 grams of iron from 30.0 c to 40.0 c, what is the specific heat of the iron in j/g. c?

How many electrons does silver have to give up in order to achieve a sido noble gas electron configuration

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.

The excretory system,need answers for all: )