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Chemistry, 22.06.2019 03:00
Which of these would be caused by a chemical change? a) the formation of lava. b) sedimantary rock layering over time. c) metamorphic rock forming from igneous. d) metamorphic rock eroding to form sedimentary rock.
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Chemistry, 22.06.2019 10:10
How do you identify the anode on a power source such as a battery? how do you identify the cathode? how are terms anion and cation?
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Chemistry, 22.06.2019 11:00
What is the molar mass of a gas that has density of 2.054 g/l
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1. Calculate the molar mass of 0.28 moles MgF2
2. Calculate the number of moles in 55g H2O
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