aqeous solution, oxidizing agent

37) which the following aqueous solutions has the highest boiling point? a) 0.10 M potassium sulfate b) 0.10 M HCl acid c) 0.10 M ammonium nitrate d) 0.10 M magnesium sulfate e) 0.20 M sucrose 38) When 70 ml of 3.0 M Nasub2COsub3 is added to 30 ml of 0.1 M NaHCOsub3, the resulting concentration of Na^+ is? ...continues

weigh out, precipitate, electron

40) A student wishes to repair 2.00 liters of 0.100 M KlOsub3 molecular mass 214). The proper procedure is to weigh out. a) 42.8 grams of KIOsub3 and add 2.00 Kilograms of Hsub2O a) 42.8 grams of KIOsub3 and add Hsub2O until the final homogeneous solution has the volume of 2.00 liters b) 21.4 grams of KIOsub3 and add Hsub2O ...continues

Aqueous solution, gen. question, hydrocarbon

43) which the following reactions does not proceed significantly to the right in aqueous solutions? a) Hsub3O^+ + OH^- --> 2Hsub2O b) HCN + OH^- ---> Hsub2O + CN^- c) Cu(Hsub2O)sub 4^2+ + 4 NHsub3 ---> Cu(NHsub3)sub4^2+ + 4Hsub2O d) Hsub2SOsub4 + Hsub2O ---> Hsub3O^+ + HSOsub4^- e) Hsub2O + HSOsub4^- ---> Hsub2SOsub4 + O ...continues

acid dissociation, organic compond, moles

46) If the acid dissociation constant, Ksuba, for an acid HA is 8 x 10^-4 at 25 degree C, what percent of the acid is dissociated in a 0.50 M solution of HA at 25 degree C? 47) the organic compound represented above is an example of O a) an alcohol | | b) an aldehyde CHsub3 ...continues

molar solution, rutherford question

49) which of the following is the correct interpretation of the results of Rutherford's experiments in which gold atoms were bombarded with alpha partcles. a) Atoms have equal numbers of positive and negative charges b) the electrons in atoms are arranged in shells c) neutrons are at the center of an atom d) neutrons and p ...continues

Equilibrium

4 HCl + O 2 > 2 Cl2 + 2 H2O HCl is at 2.30 atm, O2 is at 1.00 atm and both react at 750 K. Equlibrium pressure of Cl2 is .93 atm. How do you go about finding Kp at 750 K?

Concentration and equilibrium

at 1495 degrees Celcius Kc for H2 + Br2 > 2HBR = 3 x 10 to the 4th power. H2 = .10 M Br2 = .20M What eqation(s)would I use or steps would I take to find the concentration of HBr?

balancing redox equations by the oxidation number method

2KMnO4 + 5H2O2 + 6HCl --> 5O2 + 2MnCl2 + 8H2O + 2KCl I need to calculate the balanced NET IONIC equation for the above reaction. I've been using the oxidation number method and determined H2O2 is the reducing agent and KMnO4 is the oxidizing agent. Mn gained 5 electrons, but I'm not sure how many electrons Oxygen gained, ...continues

Equilibrium Concentrations

At 2400K, Kc=2.5 x 10 -3rd power. Equilibrium is obtained at 2400K starting with a reaction mixture of 0.20 mil of N2 and 0.20 mil of O2 in a 5.00 L vessel. What equations or processes would I used to find the concentrations in moles per liter for N2, O2, and NO?

Equilibrium

Kf=1.38 x 10 -28th power M/s. Kr = 9.3 x 10 10th power M/s. Both constants are at 25 degrees Celsius, how would I find the equilibrium constant at 25 degrees Celsius?