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Chemistry, 22.06.2019 04:30
How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer
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Which of the following is a physical change? a.burning a piece of wood b.sawing a piece of wood in half c.rust forming on an iron fence d.a copper roof changing color from orange to green
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Chemistry, 23.06.2019 03:30
The semi-conductors on the periodic table are classified as
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Chemistry, 23.06.2019 15:20
Plzzz ? which stores information in discrete steps? a magnet and coil of wire compact discs plastic records amplified speakers
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