Chemistry, 15.07.2019 22:30 mahadharun
Engineers in south africa are hired to determine whether a river that passes through a pyrochroite (mn(oh)2) deposit meets the standards for drinking water (drinking water standard for mn = 50 ppb). the river is in contact with solid mn(oh)2 (pksp = 14.3) and has a ph of 8.0. determine the concentration of mn2+ in the river in mg/l. also, determine the ph at which the concentration of mn2+ would meet the drinking water standard. (answers: [mn2+] = 275.2 mg/l; ph=9.87).
Answers: 1
Chemistry, 21.06.2019 23:00
A100-watt light bulb radiates energy at a rate of 100 j/s. (the watt, a unit of power or energy over time, is defined as 1 j/s.) if all of the light emitted has a wavelength of 525 nm , how many photons are emitted per second?
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Chemistry, 22.06.2019 01:30
Aroller coaster car is traveling down a track at 22 m/s. the car has a mass of 2000 kg. what is the kinetic energy of the car? a) 22,000 j b) 968,000 j c) 484,000 j d) 44,000 j
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Chemistry, 22.06.2019 16:10
Predict the reactants of this chemical reaction. that is, fill in the left side of the chemical equation. be sure the equation you submit is balanced. (you can edit both sides of the equation to balance it, if you need to.) note: you are writing the molecular, and not the net ionic equation. > cacl2(aq) + h20(l)
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Chemistry, 22.06.2019 23:00
What extra step distinguishes fermentation from glycolysis
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Engineers in south africa are hired to determine whether a river that passes through a pyrochroite (...
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