Of 282 kJ
In a hypothetical element, two overgy levels
are separated by
mol. What wavelength of light (in nm) is
involved for an electron to change
these two levels?​

Explain that newton first law,second law and third law of motion?

Which are forms of frozen water? check all that apply. dew frost hail rain sleet

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.