Write the formula unit equation for this reaction occurring in water: potassium sulfate and barium chloride are mixed to form potassium chloride and barium sulfate.

1. k2so4 (s) + bacl2 (s) → 2 kcl (aq) + baso4 (s)
2. k2so4 (aq) + bacl2 (aq) → 2 kcl (aq) + baso4 (s)
3. 2 k3so4 (aq) + 3 bacl2 (aq) → 6 kcl (aq) + 2 ba3(so4)2 (s)

Used the balanced equation 2h2+ o2 - -> 2h2o. if you have 7.2 grams of o2 , how many grams of h2o can you produce ?

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

Why doesn't heat added to water make the tempature rise above 100c