Determine the limiting reactant in a mixture containing 116 g of MnO2, 168 g of KOH, and 19.1 g of O2. Calculate the maximum mass (in grams) of potassium manganate, K2MnO4, that can be produced in the reaction.

You encounter a solution that is acidic and you decide to test it by adding a small amount of a strong acid. the ph lowers slightly but is approximately unchanged, and still remains acidic. what can you say about the solution? a. it is a buffer solution. b. it is not a buffer solution it is a strong acid solution. d. the solution has been neutralized. e. the solution has excess acid present

8) a mixture of he, ne and ar has a pressure of 7.85 atm. if the ne has a mole fraction of 0.47 and 8) ar has a mole fraction of 0.23, what is the pressure of he? a) 4.2 atm b) 3.7 atm c) 5.5 atm d) 2.4 atm e) 1.8 atm

Compare and contrast refraction of light and sound will give brainliest