Chemistry, 14.09.2019 10:20 terrysizemore666
Which of the following is a diprotic acid? a. h2so4 b. ch3cooh c. hc d. h3po4
Answers: 3
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One does not belong why? ice, gold ,wood ,diamond and table salt
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Chemistry, 22.06.2019 18:00
Which three statements represent the benefits of performing experiments using computer simulations?
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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 00:00
Before it was launched, a helium-filled balloon had a pressure of 201 kpa at a temperature of 27°c. at an altitude of 15,000 m, the pressure had decreased to 2.5 kpa and the temperature had dropped to -14 °c. the volume of the balloon increased to 59.3 m3. what is the original volume of the balloon? 13 m3 0.85 m3 0.077 m3 1.17 m3
Answers: 3
Which of the following is a diprotic acid? a. h2so4 b. ch3cooh c. hc d. h3po4...
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