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Refer to the Galvanic cel below (the contents of each half-cell are written beneath each compartment):
0.10 M MnO4- 0.40 M Cr3+0.20 M Mn2+ 0.30 M Cr2 O72-0.010 M H+ 0.010 M H+
The standard reduction potentials are as follows:
MnO4- + 8H+ 5e-----> Mn2+ + 4H2O E = 1.51 VCr2 O72- + 14 H+ + 6 e- ----> 2Cr3+ + 7 H2 O E = 1.33 V
a. When current is allowed to flow, which species is oxidized?b. What is the value of E0cell ?c. What is the oxidation state of Cr in Cr2O72- ?d. What is the value of Q, the reaction quotient, for this cell reaction?
Explain why bubbles are observed to emerge from the jar when it is in the boiling water. b. Explain why the lid "pops down" on the jar top soon after removing the jar from the boiling water.
A 1.000 mol sample of propane, a gas used for cooking in many rural areas, was placed in a bomb calorimeter with excess oxygen and ignited. The initial temperature of the calorimeter was 25.000°C and its total heat capacity was 96.94 kJ·°C-1. The ..
how many moles of oxygen are required to react completely with 5 mol C8H18?
what would be the payload if helium were used instead of hydrogen?, d.) would you and a companion on board, the balloon ascends to 30,000 feet where pressure is 0.28 atm. Assume no volume change, what is the temp (in celsius) at 30,000 feet?
Calculate the molar mass of a vapor that has a density of 1.58 g/L at 23.2 oC and 610. torr. 2. If the volume of a container is 39.4 L. and the container holds a gas at 13.2 oC. and 7.00x104 torr.
A gaseous mixture of O2 and N2 contains 36.8% nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 685 mmHg.
A 1.800 g sample of solid phenol (C6H5OH) was burned in excess oxygen in a bomb calorimter whos heat capacity is 11.66 kj/°C. The temprature increased from 21.36°C to 26.36°C.
A student added 27.20 cm^3 of 0.200 mol dm^-3 HCL to 0.188 g of eggshell. Calculate the amount, in mol, of HCL added. what is it?
A patient weighs 165 pounds and is to receive a drug at a dosage of 45.0 mg per kg of body weight. The drug is supplied as a solution that contains 25.0 mg of drug per mL of solution. How many mL of the drug should the patient receive?
An adult female who weighs 164 pounds consumes on average 2470 Cal/day. If she wanted to lose 5.00 pounds in 293 days, what should her daily caloric intake
Take (a.) galactose (b.) Fructose-6-phosphate through glycolysis, Pyruvate dehydrogenase complex, Citric acid cycle and oxidative phosphorylation and calculate the amount of Atp.
A sample of Oxygen is collected in a 206 mL container over water at 15C, and the barometer reads 793 torr. What volume would the dry gas occupy at 704 torr and 15C? Water's partial pressure at 15C is 12.8 torr. Answer in units of mL.
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