Part 1: A given weak acid HZ has a Ka = 4.2 × 10−6 .What is the H3O+ concentration of a solution of HZ that has a concentration of 0.65 mol/L? Answer in units of mol/L.

Part 2:What is the pH of this solution of HZ?

Part 3: What is the percent ionization of HZ in this
solution? Answer in units of %.

There is an area in idaho named craters of the moon where most of the ground is covered with basalt, adark gray, igneous rock with no visibl crystals. what can you infer about the geographical history of the area?

Use the drop-down menus to answer each question. which runner finished the 100 m race in the least amount of time? which runner stopped running for a few seconds during the race? at what distance did anastasia overtake chloe in the race?

Read the chemical equation. 2c2h2 + 5o2 → 4co2 + 2h2o which of the following statements would be correct if one mole of c2h2 was used in this reaction? one mole of oxygen was used in this reaction. five moles of oxygen were used in this reaction. four moles of carbon dioxide were produced from this reaction. two moles of carbon dioxide were produced from this reaction.