Error bars on four different data points are shown below.
Point 1
Point 2
Point 3
Point 4
Which of these data points is the most reliable?
point 1
point 2
point 3
point 4
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What is the ph of a solution with a 1.50 × 10−9 m hydroxide ion concentration?

Imagine that you have produced several versions of lactase, each of which differs from normal lactase by a single amino acid. describe a test that could indirectly determine which of the versions significantly alters the three-dimensional shape of the lactase protein.

Asample of freon gas has a volume of 2.23 liters, a pressure of 4.85 kpa, and a temperature of -1.36°c. calculate the volume at a pressure of 1.38 kpa and a temperature of 5.5°c. (show work)