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Starting with solid cobalt (II) chloride, how would you prepare 420 mL of 0.60 M cobalt (II) chloride solution?
Calculate the heat capacity of satan, i. e. Ni . if 30.0g of nickel at 100.0 c raises the temperature of 25.0g of water from 22.0 c to 30.8 c . assume no heat loss to the surroundings.
Explain what is the PH of a solution prepared by dissolving 5.4g of lithium hydroxide in water to give 250ml of solution.
Calculate the conditional formation constant Kf for the formation of an EDTA complex with copper (II) at a pH of 5.00, if log Kf= 18.80
A 21.10 g sample of liquid ethanol is initially at -36.90 oC. If the sample is heated at constant pressure (P = 1 atm.), how much kJ of energy are needed to raise the temperature of the sample to 100.60 oC.
If 77.0 mL of hydrogen gas is collected over water at 50.0 degrees celsuis and 763 mm Hg, what is the volume of dry gas at standard conditions? The vapor pressure of water is 92.5mm Hg at 50.0 degrees celsuis .
In lab a student titrates 50.00mL of an unknown monoprotic weak acid with 35.5mL of .9500M NaOH to reach the equivalence point of the titration. What volume of NaOH was delivered to reach the midpoint in this titration
Draw a picture of the following cell and write reduction half-reactions for each electrode.Pt(s)|Fe3+ (aq),Fe2+(aq)||CrO72-(aq)|Cr3+ (aq),HA(aq)|Pt(s)
Several people think salt (NaCl) is added to water to augment the boiling point so pasta will cook faster. Explain how much salt (in grams) would require adding to 4.83L of water to increase the boiling point by 2.71C.
a voltaic cell is constructed by immersing a strip of silver in a 1.0m agno3 solution and a strip of cadmiun metal in a
A colloidal compound has 10^15 spherical particles per gram with a density of2.7 g/cm^3. What is the surface area per gram
Optically pure 2-octyl sulfonate, a compound with a leaving group comparable to the tosylate and mesylate groups discussed in this chapter, was treated with varying mixtures of dioxane and water as solvent
How many milliliters of 0.121 M H2SO4 are needed to neutralize 0.220g of NaOH? If 42.5mL of 0.220 M HCl solution is needed to neutralize a solution of Ca(OH)2, how many grams of Ca(OH)2 must be in the solution?
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