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In a chemical reaction 3 moles of one gas and 2 moles of a second gas react to form 5 moles of a third gas.
In which of the processes described below should the entropy increase? Choose ALL of the correct possibilities.
A) ice cubes melting at -5 oC and 1 atm pressure
B) water disappearing from a tea kettle by boiling away
C) some dry ice left on a tabletop disappearing via sublimation
D) formation of CH4(g) and O2(g) molecules from CO2(g) and H2O(l) at room temperature and 1 atm pressure
E) water vapor in the atmosphere condenses into raindrops
Calculate the concentration of magnesium and calcium in ppm. Record your answers as ppm Mg2+, and Ca2+ espectively. For each answer indicate the ppm as CaCO3 also.
Suggest reasons why benzoic acid impurity in the benzaldehyde may drastically reduce the yield of the thiamine-promoted condensation of benzaldehyde
A compound A(C6H6) undergoes catalytic hydrogenation over lindlar catalyst to give a compound B, which in turn undergoes ozonolysis followed by workup with aqueous H2O2 to yield succinic acid and two equivalents of formic acid.
00,000 gallon spill of 10 M HCL into 379,000 L lake. Carbonate alkalinity = 150 mg/L CaCO3. Initial pH of lake is 7.50. What is the new pH of the lake after the spill?
If a chemistry student collected 834 mL of gas at 25 degrees C and 8.00 x 10^2 torr, how many moles did she collect?
Calculate the pH after 0.13 mol of NaOH is added to 1.00 L of the solution that is 0.47 M HF and 1.21 M KF.
The presence of carcon- carbon double bonds in eugenol can be tested using the bromine water test. write a balance equation for the reaction involved in this test.
consider the titration of 39.0 mL of 0.240 M HF with 0.215M NaOH. Calculate the ph at the following points. calculate the ph after the addition of 9.75 mL of base.
What mass of platinum will be formed when 12.5 A are passed through molten PtCl2 for 30.0 minutes
A certain organic compound was burned, producing 1.481 g of CO2 and 0.303 g of H2O. The mass of the original sample was 0.438 g. What is the empirical formula of the compound?
One major variation of the Wittig reaction is the Wittig-Horner reaction. The Wittig-Horner reaction uses triethylphosphate P(OEt)3 instead of PPh3
It is known that the Co2+-ligand complex obeys the Beer-Lambert Law. Calculate the mass percentage of the cobalt in the original sample.
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