Chemistry, 12.08.2019 21:10 kklovesfood

What is the difference between qualitative data and quantitative data?

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Chemistry, 22.06.2019 09:00, valeriekbueno

If you chip a tooth, most likely you will go to the dentist to have the missing material filled in. currently the material used to fill in teeth is a polymer that is flexible when put in, yet is hardened to the strength of a tooth after irradiation with blue light at a wavelength of 461 nm. what is the energy in joules for a photon of light at this wavelength?

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Chemistry, 22.06.2019 12:30, johnsont8377

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled

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Chemistry, 22.06.2019 19:20, Lovelybunny321

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, 22.06.2019 21:50, donttrip10

What is a main difference between a mixture and a pure substance? a mixture is only a liquid, but a pure substance can be in any state. a mixture looks the same throughout, but a pure substance does not.1 a mixture can vary in composition, but a pure substance has a set composlo a mixture can be made up of a single compound, but a pure substance car