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Calculate the molar solubility of silver carbonate in a solution that already contains 2.2 x 10-3 M silver nitrate, AgNO3. Ksp=8.85 x 10^-12.
Calculate the concentration of I- in a solution obtained by shaking 0.10 M KI with an excess of AgCl.
A guitar string is 90.0 cm long and has a mass of 3.27g . From the bridge to the support post (=?) is 60.0 cm and the string is under a tension of 514 N
prepare 3.9L of a HCN/NaCN buffer that has a pH of 9.70 and an osmotic pressure of 1.27atm at 298K. What masses of HCN and NaCN should you use to prepare the buffer
It takes 50% of NaOH to prepare .6 Normality of NaOH. How much of 50% of NaOH to prepare 50 Liters of solution
Two specks of dirt are trapped in a crystal ball, one at the center and other halfway to the surface, what is the refractive index of the ball
Lead poisoning in children used to be treated with intravenous injections of EDTA. If the concentration of EDTA in the blood of the patient is 2.60x10^-8 M and the formation constant for the complex
Describe the color change of a positive Benedicts test and What group reacts with the Benedicts reagent
The total electric field consists of the vector sum of two parts, Find the magnitude and direction of the total field, Specify the directional angle relative to the x axis
Write the balanced equation for the yeast using glucose to produce energy, ethanol and carbon dioxide.
A small piece of dust of mass m = 1.2 g travels horizontally through an electric air cleaner in which the electric field is 472 N/C, What is the charge of the dust particle
You need to produce a buffer with pH = 4.1 by dissolving a weighed amount of sodium formate (FW = 68.0072) in 500-mL of 0.45-M formic acid
A soccer ball is kicked with an initial horizontal velocity of 18 m/s and an initial vertical velocity of 13 m/s, What is the speed of the ball 0.8 seconds after it was kicked, What is the maximum hei
If you are performing a Zinc-Copper Galvanic Cell where Zn is the Anode and Cu is the cathode and you soak the salt bridge with a saturated ammonium nitrate solution, in which direction would the am
A 0.58 kg toy airplane is suspended from the ceiling by a 1.6 m cord and rotates in a horizontal circle, Find the speed of the plane, Find the tension in the cord
Calculate the capacity factor for decane on HP-1 column (25 m length, 0.25 mm I.D., 0.5 mkm film thickness) at 120 C. Explain.
clearly draw the fatty acid 22:4w6. Based upon the structure, what is another name for this fatty acid?
A car is traveling around a horizontal circular track with radius r = 150 m at a constant speed v = 28 m/s as shown, What is the magnitude of the car's acceleration, What is the x component of the car
What is the mechanism of 1-6-diaminohexane/sodium hydroxide with 2% sebacoul chloride (decanedioyl chloride)/hexane?
Suggest a reasonable synthetic strategy for the synthesis of 4-bromo-2-nitro-benzoic acid from o-nitrotoluene
Benzoic acid was made in a reaction along with product and benzoic acid needs to be removed using extraction. How can this be done. The solvent is CH2Cl2
layered 20 mL of 2% sebacoyl chloride (decanedioyl chloride)/hexane on top of the aqueous solution. And then we used forceps to draw the solid that forms at the interface A(nylon) into a thread and
A cannonball is shot (from ground level) with an initial horizontal velocity of 40 m/s and an initial vertical velocity of 21 m/s, What is the initial angle of the cannonball with respect to the grou
A 100.0 Ml SAMPLE OF 0.100 M methylamine (CH3NH2, Kb = 3.7 x 10^-4) is titrated with 0.250 M HNO3. Calculate the pH after addition of each of the following volumes of acid