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Chemistry, 20.07.2019 16:00 djderokey7171
Determine the amount of heat(in joules) needed to boil 5.25 grams of ice. (assume standard conditions - the ice exists at zero degrees celsius, melts at zero degrees celsius, and boils at 100 degrees celsius. remember that you need to take into account three changes: melting ice, heating water, and vaporizing the water.)
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Chemistry, 22.06.2019 07:40
22. a flask containing 450 ml of 0.50 m h2so4 was accidentally knocked to the floor. how many grams of nahco, do you need to put on the spill to neutralize the acid according to the following equation: h2so4(aq)+2 nahcos(aq) na,so(aq) +2 h20()+2 co2(g) d) 38 g a) 2.3 g b) 9.5 g c) 19 g
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Chemistry, 22.06.2019 17:10
)benzene and toluene form nearly ideal solutions. consider an equimolar solution of benzene and toluene. at 20 °c the vapour pressures of pure benzene and toluene are 9.9 kpa and 2.9 kpa, respectively. the solution is boiled by reducing the external pressure below the vapour pressure. calculate (i) the pressure when boiling begins, (ii) the composition of each component in the vapour, and (iii) the vapour pressure when only a few drops of liquid remain. assume that the rate of vaporization is low enough for the temperature to remain constant at 20 °c.
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Determine the amount of heat(in joules) needed to boil 5.25 grams of ice. (assume standard condition...
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