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A student dissolves 27.2 g of aniline, C6H7N in 120 mL of water. At what temperature will the solution freeze
Nancy pulls box with 6 N force northward; Edward pulls with 4N force eastwood and Sally pulls with 5N force 36.9 degrees south of west
A solution of 16.1 g of an unknown solute in 600 grams of water boils at 100.28 C. What is the molar mass of the solute
A straight rod of length L = 22.2 cm, carries a uniform charge, ? = 3.00 × 10-6 C/m, What is the magnitude of the electric field at yP = 50.0 cm
The next day you notice that some of the gas has leaked out. The pressure and temperature remain the same, but the volume has changed to 12.0 . How many moles of gas () remain in the cylinder
Although Aluminum Chloride, AlCl3, is ionic in the solid state, it is molecular in the gaseous state. Write the Lewis Structure, prepare a VSEPR sketch, describe the geometry, prepare a VB sketch de
A solution contains 2.0×10-4 M Ag+ and 3.6×10-2 M CO32-. Determine Qsp for Ag2CO3. Will Ag2CO3(s) precipitate? [Ksp for Ag2CO3 is 8.1×10-12]
Vector A~ has a magnitude of 9 and points in the positive x-direction. Vector B~ has a magnitude of 19 and makes an angle of 38? with the positive x-axis
An aqueous solution containing 2.0M of AgNO3 is slowly added from a burette to an aqueous solution that holds 0.01M Cl- as well as .01M Br-. Is separation of the two ions by selective precipitation
Water at a pressure of 3.00*10^5 Pa flows through a horizontal pipe at a speed of 1.00 m/s. The pipe narrows to one-fourth its original diameter
A solution is 0.1 mM in NaF, Na2CO3, and Na3PO4. What would be the order of precipitation as a source of Ca2+ is added gradually to the solution? The relevant Ksp values are Ksp [CaF2] = 4.0×1
A 15 pF capacitor is charged to 1 kV and then removed from the battery and connected in parallel to an uncharged 65 pF capacitor, Find the change in energy
Some N205 is added to a container exerting 1.00 atm before any reaction. When the equilibrium is reached, the total pressure in the container is 2.20 atm. Calculate Kp for this reaction.
An air-filled capacitor consists of two parallel plates, each with an area of 7.06 cm2, separated by a distance of 1.28 mm, Find the capacitance
How many moles of hydrofluoric acid (ka=6.8e-4) must be added to 500 ml of .10M sodium fluoride to give a buffer of pH 3.20
What is the maximum concentration of fe3+ can a buffer solution that is .10M CH3COOH and .10M CH3COONa hold without forming any precipitate
500 ml solution of benzoic acid (ka=6.6e-5) has a ph of 2.88. What is the molarity of benzoic acid
H3PO4 is a tripotic acid with a ka1=7.5x10^-3, ka2=6.2e-8 and ka3=4.8e-13. What is the value of K for H2PO4 <=> PO4^3- + 2H+
What amount of barium hydroxide (in moles) must be dissolved in a total of 5.00L of solution in order to have a pH of 12.00
A cylindrical copper rod of length 1.2 m and cross-sectional area 4.8 cm2 is insulated to prevent heat loss through its surface, Find the rate at which heat is transferred along the rod
Arrange equimolar solutions of the following compounds in the increasing pH (lowest to highest). Explain your answer.
Starting with the standard free energies of formation from the following table, calculate the values of delta G and E cell of the following reactions.
A monatomic ideal gas expands on a linear process such that P=3V + P1 ( initial pressure.) P1 and V1 are the initial pressure and initial volume
Use the appropriate standard reduction potentials in your book to calculate the value of K at 25C for the reaction NiO2(s)+2Cl-(aq)+4H+(aq) arrow Cl2(g)+Ni2+(aq)+H2O(l)
Electrical devices are often rated with a voltage and a current for example 120 V 5S batteries however are only with a voltage for example 1.5V why?