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Determine the concentration of calcium ions in a solution prepared by adding 3.50 g of calcium fluoride to 750ml of .125M NaF. Ksp for CaF2 is 3.95x10-11
Recall from class that we estimated the pi bond in ethylene to be about 350 kJ/mol. Use the same approach to estimate the strenghth
Give the two substitution products (skeletal isomers) when the following compound is added to a solution of sodium acetate in acetic acid
The density of citronellal, a mosquito repellant, is 1.45 g · L-1 at 365C and 50.0 kPa. What is the molar mass of citronellal?
The process of boiling a reaction mixture and condensing the solvent vapors back into the reaction vessel is known as a)reflux b)filtration c)distillation d)extraction
Water and 8 mol/L potassium nitrate solution are mixed to produce 700mL of a solution with a concentration of 6.mol/L. What volumes of water and potasium nitrate are used.
What is the mass of 67.0 mL of ethanol. The density of ethanol at room temperature = 0.789g/mL
If you have 260.0 mL of water at 25. C and add 110.0 mL of water at 95.0 C, what is the final temperature of the mixture. Use 1.00 g/mL as the density of water.
Calculate the osmotic pressure of a solution containing 19.10 of hemoglobin in 17.0 of solution at 19. The molar mass of hemoglobin is 6.5*10^4 g/ml
four flasks each contain 100 ml of aqueous solutions of equal concentrations at 25 degrees celsius and 1 atm which
If 32.0 g CaC2 are consumed in this reaction, how many moles of H2O are needed?
which of these compounds will be the most polar and which of the compound will have the largest London forces?
a toothpaste contains 0.24 by mass sodium fluoride naf and 0.30 by mass of triclosan c12h7cl3o2. the mass of one tube
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