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What is the freezing point of an aqueous 2.65 m calcium chloride (CaCl2) solution? The freezing point of pure water is 0.0ºC and Kf of pure water is -1.86ºC/m.
a sample of 11.0 grams of cacl2 is dissolved in 125 grams of h2o with both substances at twenty five degree celsius.
What is the concentration of the HNO3 solution? (b) How many moles of NaOH were in excess after the first addition?
a 0.050m solution of glycerine c3h83 and a 0.050m solution of lycine c5h11no2 are prepared. which solution contains the
the mass of a cube of iron is 434 g. iron has a density of 7.87 gcm3. what is the mass of a cube of lead that has the
Caculate the kinetic energy of a mole of oxygen atoms, all moving at a speed of 400 m/s (10000 mph).
Calculate molarity of a KCl solution prepared by dissolving 0.525 moles of Kcl in 250. mL of water.
this energy is in the form ofelectromagnetic radiation, what is the frequency of the radiation? Is the radiation emitted orabsorbed?
56.0 mL of 3.50 M sodium hydroxide is combined with 36.0 mL of 1.50 M magnesium chloride. What mass in grams of solid forms
How many cubic centimeters of an ore containing only 0.22% gold (by mass) must be processed to obtain $100 worth of gold.
Using only your answer to a, and the following information: Delta H = -283.0 kJ/mol for the reaction: CO(g) +1/2 O2 (g) --> CO2 (g), determine delta H for the reaction: 4CO (g) + 2NO2 (g) --> 4CO2(g) + N2 (g).
A quantity of 6.0 moles of an ideal gas is reversibly heated at constant volume from 17 C to 35 C. Calculate the entropy change.
If 4.21*10^-3 moles of Ca^2+ react with excess PO4^3- to form calcium phosphate, how many moles of the solid will form.
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