What element is this? Is it a neutral atom or ion?

Balance this equation co2(g) + h2o (g) show that the balanced equation obeys the law if conversation of mass

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.

Measurements that have similar values are: a. usually accurate b. sometimes accurate c. always accurate d. never accurate