What is the mass number most similar to?

the average mass of all isotopes of the element

the sum of the atomic numbers of all isotopes

the sum of the masses of all the isotopes

the average charge of all ions of the element

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!

Using the periodic table, complete the table to describe each atom. type in your answers

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation: