Please help (CHEMISTRY) preferably help on both but even one would be great :D the radio wave broadcast on the am dial has a wavelength of 280.4m. find the frequency of this radio wave in hertz. convert the frequency to kilohertz.

the frequency of light used to hear food in a microwave oven is 2.45 ghz (2.45x10^91/s). What is the wavelength of this light

Answer is in the photo. I can only upload it to a file hosting service. link below! Good Luck!

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answer is: naturally occurring solid, inorganic compound or element is mineral.

minerals usually have crystalline form, that means than crystal constituents (atoms, molecules or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

for example magnetite is a mineral of iron oxide (fe₂o₃).

calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (caco₃).

dolomite is an   carbonate mineral composed of calcium magnesium carbonate (camg(co₃)₂).

wher is the rest of the question