*CHEMISTRY* *WILL GIVE BRAINEST*

In the gas-volume experiment, you investigated air, methane, propane, and pentane. Which of these behaved significantly differently from the others?
O Air
O Methane
O Propane
O Pentane
O All behaved the same

For ai it's atomic number is 13 and it's mass number is 27 how many neutrons does it have

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.

Scientists often have to deal with numbers that are either very large or very small. for example, the radius of the sun is approximately 696,000 kilometers, while bacterial cells are as small as 1.9 × 10-4 millimeters. express each number in an alternate form.