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Question 1: What is the ratio of the average kinetic energy of SO2 molecule to that of an O2 molecule in a mixture of two gases? What is the ratio of the root mean square speeds, urms, of the two gases?
2: A 0.245-L flask contains 0.467 mol CO2 at 159 °C. Calculate the pressure:
a) Using the ideal gas law
b) Using the van der Waals equation
c) Explain the reason for the difference
d) Identify which correction (that for P or V) is dominant and why
q1. a solution is 0.10 m nh4cl. what is the ph of this solution?q2. a solution is 0.10 m ch3nh3cl. what are the
Calculate the concentrations of hydroxide and hydronium ions in a solution prepared by dissolving 0.308 g of solid NaOH in enough water to make 225 mL of solution.
There are approximately 2.60x10^13 red blood cells with atotal of 2.90g of iron. On the average, how many iron atoms are present in each red blood cell. (molar mass (Fe)= 55.85g
nickel can be extracted from nickel sulfide concentrates at 1200 c via the following reaction4nios ni3s2 --gt 7nis
Calculate the volume of glacial acetic acid (17.6M) and eight of sodium acetate (mm=82.03) that is required to make 102 mL of 0.2M buffer at ph 4.85. The Ka of acetic acid is 1.4*10^-5.
calculate the molarity of an nh3 solution made up of 37.5 g of nh3 in 70.0 g of water. the density of the solution is
A solution is prepared by adding 0.1M acetic acid and 0.01 M ethylamine to water and adjusting the pH to 7.4. What is the ratio of acetate to acetic acid. WHat is the ratio of ethylamine to ethylammonium ion
Atoms of Sg are very unstable, and it is therefore difficult to study this element's properties. Based on the position of Sg in the periodic table, what element should it most closely resemble in its chemical properties?
The increase in the rate of reaction with temperature is due to A. increase in the number of effective collisions. B. decrease in activation energy.
The temperature inside a pressure cooker is 1150C. Calculate the vapor pressure of the water inside the pressure cooker.
Calculate the final concentration of a sodium hydroxide solution prepared by adding 10.00mL of 5.325M sodium hydroxide stock solution into a 250.00mL volumetric flask and then filling to the mark with de-ionized water.
The base-dissociation constant of ethylamine (C2H5NH2) is 6.4 × 10-4 at 25.0 °C. The of [H+] in a 1.6 × 10-2 M solution of ethylamine is __________ M. ( Ans: 3.5 × 10^-12)
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