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Balnace the following half reactions in an acidic solution a) MnO4 -(aq)---- MnO2(s) b) IO2- (aq)----Io4-(aq) based on (a) and (b) above, write balanced redox eqautions of (A) in an acidic solution
suppose the original experiment is done on the Moon, where g, the acceleration due to gravity, how will the graph compare to the original graph
How many L of solvent should be added to 0.46 L of a 0.28 M solution if you want a final concentration of 0.13 M.
Based on this information and what you learned in this chapter about the action potential, estimate the total number of sodium ion channels in the membrane of a nerve cell
Z- is a weak base. An aqueous solution of NaZ is prepared by dissolving .350 mol of NaZ in sufficient water to yield 1.0 L of solution. The pH of the solution was 8.93 at 25.0 C. The Kb of Z- is
Suppose that 35.47 g of ice at -13.7°C is placed in 46.51 g of water at 96.7°C in a perfectly insulated vessel. Calculate the final temperature.
What is the pH of a solution made by mixing 100.00 mL of .20 M HCl with 50.0 mL of .10 M HCl. Assume that the volumes are additive
A) Amonium phospahte (NH4)3PO4 is water insoluble b) A precipitation reaction will occur in the following reaction AgCLO4 (aq) + CaBr2(aq) c) Ba(OH)2 is a strong acid d) Ba(OH)2 is a strong electrol
A sample of c3h8 has 6.56 x 10^24 H atoms. How many carbon atoms does the sample contain. what is the total mass of the sample
The haloform reaction is executed in this experiment to synthesize benzoic acid from a methyl ketone, acetophenone. Provide an explanation for the following steps in the procedure. a) Why is acetone
A large balloon of mass 233 kg is filled with helium gas until its volume is 327 m3. Assume the density of air is 1.29 kg/m3, Calculate the buoyant force acting on the balloon
Briefly explain the circumstances under which a mixed solvent recrystallization method would be used to recrystallize a given compound.
The temperature of a 12.58 g sample of calcium carbonate increases from 23.6 c to 38.2 C. if the specific heat of calcuim carbonate is 0.82 J/g-K, how many joules of heat are absorb
Double slits of 0.115 mm separation are placed at the front of a lecture room that is 17.1 m long. what is the separation between the first two bright fringes
Balance the following equations and write balanced net ion for each reaction. a) HBR(aq) + Ca(OH)2 (aq) b) net ionic equation C) Fe(OH)3 (aq) + H2SO4 (aq) d) net ionic quation
A magnetic field points perpendicular into a 5x12 cm rectangular coil of 44 turns and resistance .25 omega. what magnitude of emf is being induced in the coil
It is the universal solvent d. it does not participate in the reaction e. it is necessary for the formation of the bromonium ion
At some location, earths magnetic field is B earth= 0.52 gauses and points north, at 55.0 degrees below horizontal line. find the magnitude of the magnetic force on a 25 m long segment of power line
what are the concentrations of [NAD+] and [NADH] in the cells? Under oxidative stress condition, the cellular redox potential is shifted to -290 mV. What will be the concentrations of [NAD+] and [NA
What potential is generated on a plane's wings when it flies through the earth's magnetic field
In a certain experiment, the pressure of a gas depends on the volume by P=alphaV^3+betaV^2, What is the work done on the gas
What are the empirical formula and the molecular formula of the compound.
The Ed-Scale defines the perfect temperature of a martini to be 14 degrees E and the boiling point of antifreeze to be 100 degrees E. Use this equation to find the freezing point of water in Eds
Suppose the tension in a cord is 12.0 N. If the speed of a wave in the cord is 9.50 m/s, then what must be the linear mass density of the cord
A loop of wire with radius R has charge density 3theta^2 , where theta is in radians. Write an integral (but do not solve) to find the electric potential at the center of the loop