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When 25.5 mL of 0.500 M H2SO4 is added ot 25.5 mL of 1.00 M KOH in a coffee-cup calorimeter at 23.50 degrees Celsius, the temmperature rises to 30.17 degrees Celsius. Calculate delta H of this reaction. (Assume that the total volume is the sum of the individual volumes and the density and specific heat capacity of the solution are the same as for pure water) (d for water=1.00g/mL; c for water=4.184 J/g degrees Celsius)
an aerosol can holds 0.35 L at 4.5 atm pressure. What is the volume when the gas is released into 1.0 atm pressure.
Draw all of the stereoisomers that result when (E)-but-2-ene is hydrogenated with D2 over a metal catalyst.
Boron often forms compounds that do not comply with the octet rule that are termed electron deficient. BF3, whose structure is shown below on the left, is an example of an electron deficient compound.
how long will it take for the concentration of A to decrease from 1.0 M to 0.25 M? If [Bo] = 1.5 M, what will be the concentration once [A] = 0.25 M?
Indicators can be used to estimate the pH value of soultions. To determine the pH of a 0.01M weak acid (HX), a few drops of three different indicators are added to separate portions of HX. The resulting colors of the HX solution are below.
Calculate the molar solubility of silver thiocyanate, AgSCN, in pure water and in water containing 0.010 M NaSCN.
A 280 mL stock solution contains 2.3 M Ca(CN)2. When 105 mL of the stock solution is diluted to 120 mL, how many moles of CN- ions will be contained in the dilute solution?
Why are the standard reagents used in neutralization titrations generally strong acids and bases rather than weak acids and bases?
if you used 8900 kilojoules you expend in energy in one day to heat 49000g of water at 19 C what would be the rise in temperature.
explain how the designed sensing strategy functions. Point form answers are acceptable, feel free to use a diagram in your explanation.
Inexperienced athletes might try consuming three high energy drinks just before a race but veteran marathon runners know this would impair their performance. Why?
One mole of neon gas equals how many grams? Round to the nearest hundredth. Don't forget the units. Be sure to abbreviate the units.
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