What is the mass of the molecular ion formed from the compound having the molecular formula, C11H15NO2 (MDMA)

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.

Water molecules have a strong attraction to each other because of hydrogen bonding, allowing water to move against gravity up a plant's stem through capillary action. true false

Calcium chloride +gold(1) oxide—>