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Chemistry, 22.06.2019 10:30
Which characteristics can be used to differentiate star systems? check all that apply.
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From the options provided for each element below, choose the properties that it may have based on its location in the periodic table fluorine (f): highly reactive nonmetal shiny a conductor
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Chemistry, 22.06.2019 19:20
15. which of the following is not human-caused groundwater pollution? a. water in an aquifer dissolves elements such as arsenic and mercury from surrounding rock. b. water in an aquifer is contaminated by leachate that seeps into the ground from a landfill. c. water in an aquifer becomes polluted with chemicals used in hydraulic fracturing, or fracking. d. water in an aquifer absorbs harmful bacteria from the drainage field of a septic tank.
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Chemistry, 23.06.2019 05:30
Calculate the temperature rise when 0.2g of propane is used to heat 400cm cubed of water.
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Express this as a chemical equation: hydrogen gas bubbled through a solution of silver nitrate?...
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