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Calculate the pH at the points in the titration of 40.00 mL of 0.425 M NH3 for the reaction below. NH3(aq) + HNO3 ? NH4+(aq) + NO3?(aq) For NH3, Kb = 1.8x10-5. Enter your answer with 2 decimal place
Arrange the following gaseous substances in order of decreasing root mean square velocity at 25°C. argon, fluorine, carbon dioxide, oxygen, helium A.
Its a cyclohexanol with an oh on the second carbon at the top and a cl on 4 directly opposite, what is the name
The degree of ionization for propionic acid in an aqueous solution which contains 4.00 mol C2H5CO2H in 2.00 L is
It is believed that a large electric fish known as Torpedo occidentalis uses electricity to shock its victims, What is the total amount of work done during one pulse
The owner wants to grow perch and needs the pH around 7.0. If the daily water flow into and out of the pond averages 30 m^3 per day with a pH similar to that of the pond, what is the minimum amount
what resistance would have to be connected in series with a 3V lamp in a 28 V circuit when the operating current of the lamp is .5 A
How and why is the average enthalpy of the reaction changed when a different concentration of sodium hydroxide is used
A metal sphere hangs from a string and has 4 kg of mass. The sphere has a charge of +2.3 µC. What is the electric force on the metal sphere if the magnitude of the electric field is 106 N/C
Choose the correct answer of the following, explain why it is true, and explain why the other choices are untrue: (A) high pE is associated with species such as CH4, NH4+, and Fe2+
What is the maximum amount of work that can be obtained by the combustion of this butane if the gas is first brought to a pressure of 1.00 atm and the temperature is brought to 25 oC? Assume the pro
A capacitor with air between its plates is charged to 80 V and then disconnected from the battery. What is the dielectric constant of this glass
Analysis of water in a sediment sample at equilibrium at ph 7.00 showed [so42-] = 2.00 x 10^-5 m and a partial pressure of h2s of 0.100 atm. show with appropriate calculations if methane, ch4, would
In some industrial processes, sulfite is added to remove dissolved O2 to prevent corrosion of pipes. Write the balanced overall chemical reaction for reduction of dissolved O2 by sulfite (SO32-)
Provide a structure for the following compound: EI mass spectrum: two molecular ions of about equal intensity at m/z = 180 and 182; IR: 1740 cm-1; 1H NMR: 1.30 (3H, t J = 7 Hz); ? 1.80 (3H, d, J = 7
Imagine that we define the rear end of a train 120 m long to long to define the origin X'=0 in the train frame and we define a certain track signal light to define the origin X=0 in the track frame.
Not enough sodium hydroxide was added, so the solution was still acidic when the beaker was heated to convert the copper(II) hydroxide to copper(II) oxide.
The driver of a truck slams on the brakes when he sees a tree blocking the road. With what speed does the truck then strike the tree
The acid catalyzed dehydration of 4-methycyclohexanol to 4-methycyclohexene is a reversible reaction that can be shifted to the alkene product according to le chaterlier's principle. Briefly explain
A pair of oppositely charged parallel plates is separated by 5.44 mm. A potential di?erence of 631 V exists between the plates. What is the strength of the electric field between the plates
NaOH is slowly added to a solution that is 0.067M in Cu2+ and 0.138M in Fe3+. Which compound will precipitate first
What is the persent yield of diethyle ether. b, During the proecess 45% of ethanol that did not produce diethyl ether react by the side reaction. What mass of ethylene is produced
When 20.6 gm of methane and 39.7 gm of chlorine gas undergo a reaction that has a 73.3 % yield. What mass of CH3Cl forms. Hydrogen chloride also forms.
Two circular disks spaced 0.50mm apart form a parallel-plate capacitor. What are the diameters of the disks