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Explain what mass of NCl must dissolve in 65 grams of water to lower the freezing point by 7.50 degrees Celsius? The freezing point depression constant, Kfp, for water is -1.86 degrees Celsius/m.Presume the van't Hoff factor for NaCl is 1.87.
The equation for the combustion of gaseous methanol is: 2CH3OH(g) + 3O2(g) ? 2CO2(g) + 4H2O(g) Estimate the ?H°rxn per mole of methanol combusted
It has been proposed to mix a 1500 L bath containing 5% by volume of H2SO4 with a 1500 L bath containing 5% by weight of NaOH. The Specific gravity of the acid added is 1.841 as well as its purity is 96%.
the solubility of n2 in blood at 37 ordmc and at a partial pressure of 0.80 atm is 5.6 x 10-4 molel. a deep-sea diver
He later discovers that the percent carbon in 100 g of the solution is 12.10% by mass and consequently, determines that his solution is too dilute in sugar. What mass NaCl did the practical joker add to the container of sugar?
Explain the flow rate from the primary clarifiers is 60,000m3/day and a biomass production rate of 0.5 kg/m3-d. The return VSS concentration is 12,000 mg/L. The specific of the VSS is 1.0.
when 100g Mg3N2 reacts with 75.0g H20, 15.0g of NH3 is formed. What is the percent yield? Mg3N2+6H2O-->3Mg(OH)2+2NH3
nitrous oxide n2o decomposes at 600degc according to the balanced equation2n2og rarr 2n2g o2ga reaction mechanism
If I add 1.65L to 112g of sodium acetate what is the molality of sodium acetate in the solution
Given the following two solutions: 0.200 M HC2H3O2(aq) with pKa = 4.76 0.200M NaOH(aq) A mixture is made using 50.0 mL of the HC2H3O2 and 25.0 mL of the NaOH. What is its pH?
A cubic meter of a gravel-and-sand aquifer has been contaminated with 20 L of tetrachloroethylene. If the amount of tetrachloroethylene dissolved in aquifer water is 20 percent of its aqueous solubility,
A little trouble understanding what to do in this question: It has been reported that the reaction of Ca-40 with W-186 produces Mg-40. If only one other nuclide is formed by this reaction, write out a balanced nuclear reaction
There is a low concentration of H+ and a high concentration of OH- D. the pH only tells us about H+; it tells us noting about the amount of OH-
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