An unknown element sample has 3 isotopes present. The first isotope has a mass of 23.98 amu and is 78.7% abundant. The second has a mass of 24.98 amu and abundance of 10.13%. The last isotope has
a mass of 25.93 amu and an abundance of 11.17%.

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!

In a water molecule, hydrogen and oxygen are held together by a(an) bond. a) double covalent b) ionic c) nonpolar covalent d) hydrogen e) polar covalent

What is the subscript for oxygen in its molecular formula