A 22.30 g sample of zinc is heated and then placed in a calorimeter containing 65.0 g of water. Temperature of water increases from 20.00 oC to 26.50 oC. The specific heat of zinc is 0.390 J/goC. What is the ∆T for zinc?

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 was bohr’s contribution to the planetary model

Pegmatites are igneous rocks in which the individual minerals are very large. typically, the minerals are all light-colored quartz, feldspar and muscovite. if you were given a black and white photograph of a pegmatite in a quarry (where the rock has been blasted and broken), what physical properties could you use to identify those three minerals in this hypothetical photo? describe each mineral and the specific diagnostic properties. be specific.