Calculate the pH of a 0.02 M solution of ascorbic acid ( K a1 = 7.9 × 10 –5; K a2 is 1.6 × 10 –12). a.
2.9
b.
8.2
c.
11.8
d.
11.1
e.
5.8

At 20°c, a sample of h2o liquid and a sample of co2 gas each have the same average kinetic energy. why is one a liquid and the other a gas at this temperature?

State one important difference between a physical change and a chemical change?

What is the measured amount of a product obtained from a chemical reaction?