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A 17.0 g piece of aluminum (which has a molar heat capacity of 24.03 J/°C·mol) is heated to 82.4°C and dropped into a calorimeter containing water (specific heat capacity of water is 4.18 J/g°C) initially at 22.3°C. The final temperature of the water is 25.3°C. Ignoring significant figures, calculate the mass of water in the calorimeter.
what is the molar concentration of a h3po3 solution if 150.00 ml of the solution was required to neutralize 75.00 ml of
If a container having a volume of 322mL at 25.o degrees celcius was to suddenly reduce to 75.0mL, what would be the new temp.(n,p constant)?
Consider the following reaction, where X represents and unknown element. 6X(s) + 2B2O3(s0 = B4X3(s) + 3XO2(g) If 165 grams of X reacts completely with diboron trioxide to rproduce 2.29 mol of B4X3.
Heart pacemakers are often powered by lithium-silver chromate "button" batteries. The overall cell reaction is: 2 Li(s) + Ag2CrO4(s) ? Li2CrO4(s) + 2 Ag(s) The overall cell potential is 3.5V. What is the half-cell potential for the follow half rea..
Determine which type of ion exchange chromatography would work best and at which pH would you run this column.
Estimate the magnitude of the absolute error nad percent error in the measured sample volumes compare those errors to the erors that occur when measuring volumes of approimatley 8 ml as normally done in this experiment.
a sample of nitrogen occupies a volume of 600 ml at 60 celcius and 650 mm hg of pressure. what will be its volume at stp?
An unknown organic compound is mixed with 0.5190 g of naphthalene crystals to give a mixture having a total mass of 0.5959 g. The mixture is heated until the naphthalene melts and the unknown substance dissolves.
A technician plates a bowl with about 4.6 grams of chromium from an aqueous chromium (III) sulfate. What current is needed to plate this amount of chromium in 3.5 hours.
Methyl salicylate (oil of wintergreen) is prepared by heating salicylic acid (C7H6O3) with methanol (CH3OH) C7H6O3 + CH3OH ® C8H8O3 + H2O What is the percent yield if reaction of 8.244 g of salicylic acid with an excess of methanol produced a meas..
Question- What will be the change in enthalpy when 100.0 g of butane, C4H10, is burned in oxygen as shown in the thermochemical equation below. 2 C4H10(l) + 13 O2(g) ---> 8 CO2(g) + 10 H2O(g) DeltaH = -5271 kJ
Is the efficiency of a carnot engine affected by the heat capacity of the gas. i.e if the heat capacity varies with temperature.
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