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What is the molar solubility of lead(II) chloride in a solution that also contains 0.15 M Cl- ions at 25 °C? The Ksp of PbCl2 is 1.6 × 10-5.
a pencil 7.5 inches long.if there are 2.54cm in an inch,how long is this pencil in decimeters?10dm=1m
an ice cube contains 925 grams of water. If the initial temperature is at 15 degrees celcius, how many kilojoules of heat are needed to cool and freeze the water at 0 degrees celcius.
Compare the proposed reaction mechanism for the sodiumhypochlorite oxidation of cyclohexanol with that involved in thechromic acid oxidation. Do you notice any similarities?
A corrosionist pipetted a 50.00 ml sample of an unknown brine and titrated it with 37.64 ml of 0.1024 M silver nitrate solution. Calculate the ppm of salt (NaCl)in the sample.
The equilibrium constant, Kp, for the following reaction is 0.497 at 500 K: PCl5(g) PCl3(g) + Cl2(g) Calculate the equilibrium partial pressures of all species when PCl5(g) is introduced into an evacuated flask at a pressure
Ben Franklin dropped the oil on the surface of a lake and found that 2 mL of oil gave a circle of radius 30 m. Estimate the volumetric size of an oil molecule in angstroms, give one significant digit.
An experiment requires 44.0 g of ethylene glycol, a liquid whose density is 1.114 g/mL. Rather than weigh the sample on a balance, a chemist chooses to dispense the liquid using a graduated cylinder. What volume of the liquid should he use?
Calculate the energy in joules and calories required to heat 24.0g water from 20.0C to 27.7C
Using stereoformulas, show that reduction of (R)-benzoin from the more hindered face would give give (R,R)-hydrobenzoin. Please no links to external sites. Be clear and concise.
Since phosphate ionization of 2.14, 6.86 and 12.4. you make stock buffer 500mM in 1L. You decide to make one stock pH 6.5 and the other ph 7.2 How many mmols of what type of phosphate componet do you add to each of these buffers?
Solid Ba(MNO4)2 is in equilibrium in a solution of KMNO4. What concentration of KMNO4 is needed to establish a concentration of 2.0 x 10-8 for the Ba 2+ ion in solution?
Calculate the freezing point and boiling point of the solution. Constants may be found here. benzene C6H6 Kf = 5.12 *C/m Freezing Point = 5.49 *C Kb = 2.53 *C/m Normal boiling point = 80.1 *C
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