Why is the enthalpy of formation of oxygen zero?

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.

What approach is required to balance the objectives of sustainable development? balancing the objectives of sustainable development requires a(n) .

What three natural resources are found in the great lakes region