Chemistry, 29.07.2019 01:30 antonjas001
Amixture containing 21.4 g of ice (at exactly 0.00 ∘c) and 75.3 g of water (at 55.3 ∘c) is placed in an insulated container. assuming no loss of heat to the surroundings, what is the final temperature of the mixture?
Answers: 1
Chemistry, 22.06.2019 15:00
Which theory was contradicted by experiments with the photoelectric effect? light spreads out after it passes through a small opening. as soon as light strikes metal, electrons will be ejected. visible light, regardless of color, will cause the ejection of electrons when striking metal. the kinetic energy of ejected electrons depends on the frequency of light that strikes the metal.
Answers: 2
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.
Answers: 1
Chemistry, 23.06.2019 00:30
If there are 3.5 moles of koh, how many moles of naoh can be produced? question 1 options: a)3.0 moles naoh b)3.5 moles naoh c)1 moles naoh d)9 moles naoh
Answers: 1
Chemistry, 23.06.2019 14:00
Aracehorse with a kinetic energy of 78,750 j is clocked at 17 m/s when it crosses the finish line. what is the horse's mass?
Answers: 2
Amixture containing 21.4 g of ice (at exactly 0.00 ∘c) and 75.3 g of water (at 55.3 ∘c) is placed in...
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