What information is needed to calculate the average atomic mass of an element?(1 point) the charge on each isotope
the number of protons in each isotope
the total amount of the element in the sample or in nature
the relative abundance of its isotopes

Nuclear fusion is the source of energy for stars. besides hydrogen, which other element is most likely also common in stars?

Select the correct answer. when carbon dioxide dissolves in water, it sometimes reacts with water to form carbonic acid as in this balanced equation: co2 + h2o → h2co3. if 495 milliliters of carbon dioxide at 25°c and 101.3 kilopascals reacts with excess water, what is the theoretical yield of carbonic acid? use the periodic table and the ideal gas resource a. 0.889 g b. 1.10g c. 1.27g d. 2.02g what's the answer! quick!

1. list three scientific reasons cockroaches may fly.