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6- In the reaction 2KMnO4 + 5(COOH)2 + 3H2SO4 yields 10 CO2 + 2MnSO4 + K2SO4 + 8H2O is the Manganese being oxidized, reduced, or neither?
a. oxidized
b. reduced
c. neither
7-What is the molarity of the KMnO4 solution if it requires 10.0 mL of KMnO4 to react completely with 11.5 mL of 0.125 M (COOH)2 in the balanced reaction 2KMnO4 + 5(COOH)2 + 3H2SO4 yields 10 CO2 + 2MnSO4 + K2SO4 + 8H2Oa. 0.144 M
b. 0.109 M
c. 0.359 M
d. 0.272 M
A student following the procedure of the experiment determining the molar mass of a volatile liquid by the dumas method obtaint the following data for an unknown volatile liquid
where b and R are constants. If the pressure and temperature are such that Vm = 10b, what is the numerical value of the compression factor?
Calculate the change in entropy when 1.65 mol of a perfect gas with Cvm= 12 J K-1 mol-1 is compressed from 0.64 dm3 to 0.23 dm3 and at the same time heated from 186 K to 412 K. Hint: Entropy is a state function, meaning that the result is path ind..
adipic acid and citric acid have very similar melting points. given two unknown samples one being citric acid and the
At 20 degrees C the vapor pressure of pure methanol (CH3OH) is 89.0 torr and of pure water (H2O) is 17.5 torr. A solution of methanol and water has a total vapor pressure of 52.9 torr at 20 degrees C.
A diatomic gas does 315 J of work and also absorbs 580 cal of heat. What is the change in internal energy of the gas?
a graduated cylinder contains 154 of water. a 15.0 piece of iron density 7.86 and a 18.0 piece of lead are added.
what will happen if a small amount of HCl is added to a 0.1M solution of HF? a. the percent ionization of HF will decrease. b. Ka for HF will increase
Calculate the planar densities in ions per square nanometer on the (1 1 1) and (1 1 0) planes for (a) NiO and (b) NaCl. Ionic radii are Ni2+ = 0.078 nm and O2-=0.132nm, Na+=0.098nm, and Cl-=0.181nm
in the reaction p4 5 o2 rarr 2 p2o5 how many moles of o2 are consumed each time 0.5 moles of p2o5
The Kb of 2,4,6-trimethylpyridine is 2.7x10-7 I've really been struggling with this stuff because i've been out of school sick, if there is any way that the steps can be shown in a more broad spectrum instead of ever little detail that would be ap..
Calculate the work done (in J) on the surrounding atmosphere (1atm pressure, 25.5 oC ) by the evolution of hydrogen in the subsequent reaction. State any assumptions you have made.
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