Which of the following statements best describes the properties of aluminum-28?

a. aluminum-28 has a higher percent abundance in nature than aluminum-27.
b. aluminum-28 has one more proton than aluminum-27.
c. when aluminum-28 undergoes beta-decay, magnesium-28 is produced.
d. when aluminum-28 undergoes beta decay, silicon-28 is produced.

What is the mass of sodium in 3 moles of sodium chloride

Identify and describe the three ways that mutations affect organisms.

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.