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Chemistry, 21.06.2019 14:30
Find the protons, electrons and neutrons for strontium with a mass of 83
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Chemistry, 21.06.2019 16:30
How many atoms of oxygen are contained in 160 grams of n2o3
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Chemistry, 22.06.2019 09:30
In 2002, the rare earth elements mine in mountain pass, california was closed because
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Chemistry, 23.06.2019 01:20
Use the de broglie's wave equation to find the wavelength of an electron moving at 4.5 Ă— 106 m/s. show your work. note: h= plank's constant (6.62607 x 10-34 j s)
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Geography, 24.06.2019 05:50
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