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Consider the possible sources of error described below. Briefly explain the effect of each on your calculated molar heats of neutralization. Indicate which items of data would be in error and the effect (too large, small, or no effect). a.) The calorimeter cup had several millimeters of water in it when you added the HCl in Step 16: b.) The base solution was added to the acid solution but was not stirred while temperature measurement were not made: c.) Some of the base splashed out of the calorimeter while pouring:
A 352-mL container of nitrogen is held at a pressure of 791 mm Hg. What volume container would be lowered to 649 mm Hg?
A substance, A2B, has the composition by mass of 60% A and 40% B. What is the composition of AB2 by mass?
Question about States of Matter, Ian eats too many mars bars. To try to get rid of the excess kJ's he exercises in the gym by using a weights machine which works by compressing a cylinder of gas.
A room contains 46 of air.How many kilowatt-hours of energy are necessary to heat the air in the house from 9 to 30? The heat capacity of air is 1.03.
Determine what would you use to prepare 10 ml of 0.2M CaCl 2 from the 20M stock solution and find out which solution is with pH > 7, but is not an Arrhenius base in the strict sense?
Determine the heat of formation of sulfuric acid, H2SO4 (l) from the following thermochemical equations: S8(s) + 8 O2(g)-->8SO2(g) H= -2374.6 kJ S8(s) + 12O2(g)-->8SO3(g) H=-3165.8 kJ H2O(l)+SO3(g)-->H2SO4(l) H=-132.3 kJ 2H2(g)+O2(g)-->2H2O(l) H=..
Draw a doagram to show the changes in potential energy that occur from the rotation around the C1-C2 bond of 1-bromopropane
The first order reaction SO2CL2 yields SO2+ Cl2 is 10% complete in 80 min. How long would it take for the reaction to be 95% complete?
Imagine that you model your lungs as a 5 L sealed balloon at sea level: Estimate the volume of your lungs at 100 m below the sea level.
The J=0 to J=1 transition for carbon monoxide (12C16O) occurs at 1.153 X 10^5 MHz. Calculate the bond length of carbon monoxide.
White phosphorus is a molecular solid made of molecules of P4. A 3.05 g sample of white phosphorus starts at 20oC. Calculate the amount of heat (in J) required to melt the sample.
A piece of copper alloy with a mass of 60.0 g is heated from 21.0 ?C to 44.0?C. In the process, it absorbs 507 J of energy as heat. What is the speci?c heat of this copper alloy.
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