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The boiling point of an aqueous solution is 101.53 °C. What is the freezing point? Constants can be found here.
Calculate the increase in entropy when 3.50 mol of monatomic perfect gas with Cp = 5/2 R is heated from 250 K to 700 K and simultaneously expand from 20.0 L to 60.0 L.
First determine the number of moles of rm Na^+ using the given molarity and volume. Next, use the chemical formula to determine the number of moles of rm Na_3PO_4 needed. Finally, convert moles to grams using the molecular weight of the compound.
When measuring the boiling point of a compound, why is the micro boiling point determined at the point when the last bubble has left the bottom of the bell and the liquid begins to rise in the bell
12.5 g of KCl (MM = 74.55 g/mol) is dissolved in enough water to make 675 mL of solution. Calculate the molarity of the KCl solution.
what is the actual yeid of bromobutane with the area of 750 and a theriotical of 100%
The density of aluminum is 2.70 g/cm3 and the density of chromium, is 7.19 g/cm3. If equal masses of aluminum and chromium are transferred to equal volumes of water in separate graduated cylinders, which graduated cylinder would have the greatest ..
How many grams of KOH must be added to .500L of the buffer (206mL of 0.453M HCL and .500L of 0.400M sodium acetate)to change the pH(4.79) by .135 units?
For an oxidation and reduction reaction, indicate what is oxidized and what is reduced in the following reaction.
cyclohexane-toluene mixture, and then obtain IR spectra for each fraction. How would the IR spectrum of the first 1 mL fraction look different from that of the last 1 mL fraction?
Calculate the molarity of the solution. How many grams of KNO3 are needed to make 450 mL of a solution that is to contain 5.50 mg/mL of potassium ion?
What is the decay constant for iodine-131? It decays by beta emission with a half-life of 8.04 days.
A solution of sodium nitrate, NaNO3, in water is 5.181 molar and its density is 1.2680 g mL-1. Calculate the percent, by weight, of sodium nitrate in the solution.
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