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Calculate the enthalpy per mole of sodium hydroxide for the dissolution process. Assume the specific heat of the solution is the same as that for pure water.
Two traveling sinusoidal waves are described by the wave functions, What is the amplitude of the resultant wave, What is the frequency of the resultant wave
A solution contains .294 M solution sodium cyanide and .0919 M hydrocyanic acid. What is the pH of this solution.
A car moving at 150km/h (93mph) is approaching a stationary police car whose radar speed detector operates at a frequency of 15Ghz
Commercial electrolytic cells for producing aluminum operate at 5 volts and 100,000 Amperes. How long does it take to produce 1000 kilograms of aluminum
Two small identical conducting spheres are placed with their centers 0.78 m a part, The spheres are connected by a conducting wire, What is the electrostatic force between the two after equilibrium is
A technician is plating a faucet with 0.86 grams of chromium from an electrolytic bath containing aqueous Cr2(SO4)3. If 12.5 minutes is allowed for the operation, what current is needed
What is the minimum (least negative) cathode potential (versus SHE) needed to electroplate silver onto cutlery in a solution of Ag^+ and NH3 in which most of the silver ions are present as the compl
It has been claimed that an insect called the froghopper (Philaenus spumarius) is the best jumper in the animal kingdom, What is the velocity of the insect after it has accelerated through this short
One of the reasons that back titration is preferred to direct titration is because of the limited solubility of carbonates in water. Why does this make direct titration difficult and why does back t
What would be the potential of the Cu-Zn cell be if the concentration of Cu2+ was 1.00M while the concentration of Zn2+ was 0.60M
A positive charge q1 = 2.50 µC on a frictionless horizontal surface is attached to a spring of force constant k, the distance between charges to d = 9.00 cm, Find the value of k
Explain how the Pka hisdidine 57 is important to its role in mechanism of chymotrypsin action
What is the minimum (least negative) cathode potential (versus SHE) needed to electroplate silver onto cutlery in a solution of Ag+ and NH3 in which most of the silver ions are present as the comple
A cannonball is dropped from the top of a building. If the point of release is 44.8 m above the ground, what is the speed of the cannonball
Calculate the grams of iron ion present in a 1.25 mL of a solution that required 2.20mL 0f 0.002115 M KMnO4 in a titration going to a faint pink endpoint.
A 2.50mL syringe has an inner diameter of 6.00mm , a needle inner diameter of 0.290mm , and a plunger pad diameter of 1.2 cm, What is the minimum force the nurse needs to apply to the syringe
Suppose we have a flask with a movable piston in which pressure is kept constant at 1.00atm. If an 8.00gram sample of solid ammonium nitrate is introduced into the flask what is the volume of the fl
required to reach the first equivalence point of a solution of citric acid (H3C6 H5O7), how many ml of NaOH are required to completely neutralize this solution
A 2.0cm×2.0cm×6.0cm block floats in water with its long axis vertical. The length of the block above water is 1.0cm
Liquid Chlorobenzene flows through a pipe at a rate of 3M^3/min. What is the mass flow rate of the stream in kg/h. What is the molar flow rate in mol/s
Barium chromate dissolved upon treatment with nitric acid forming an orange solution. Write a net ionic equation to represent the overall reaction that occurs.
When a certain unknown hydrocarbon is completely combusted with excess oxygen, it is observed that 1.12 L of H2O gas and 3.36 L of CO2 are produced at STP. What is the empirical formula of the unkno
Glycolic acid, which is a monoprotic acid and a constituent in sugar cane, has a pKa of 3.9. A 25.0 mL solution of glycolic acid is titrated to the stoichiometric point with 35.8 mL of 0.020 M sodiu
The middle C string on a piano is under a tension of 992 N. The period and wavelength of a wave on this string are 3.82 ms and 1.39 m