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Question- What fraction of O2 molecules at 298K has velocities between 410 and 420m/sec? What fraction of nitrogen molecules?
Please demonstrate the entire work. I am thanking you in advance
Calculate the pH of a water at 25oC that contains 3.69 mg/L of carbonic acid. You may assume that the concentrations of carbonate and hydroxide are negligible and that there are no other ions present in solution.
Caffeine is a stimulant found in coffee and tea . A solution of caffeine in chloroform as a solvent has a concentration of 7.9 x 10^-2m. What's the percent of caffeine by mass? Calculate the mole fraction of caffeine.
How much limestone must be decomposed by heating to produce 150.0 grams of lime, CaO?assuming that the limestone contains 85.0% pure CaCO3.
A 6.11g sample of Cu-?Zn alloy reacts with excess aqueous HCl producing 1.26 L of H2(g) at 22.0 ?C and 728 torr. Since only the Zn portion of the alloy reacts, calculate the percent Cu in the alloy.
The melting points of a series of 18-carbon fatty acids are: stearic acid, 69.6 C; oleic acid, 13.4 C; linoleic acid, -5 C; and linolenic acid, -11 C. What structural aspect of these 18-carbon fatty acids can be correlated with the melting point
Suppose that you wished to prepare copper(II) carbonate by a precipitation reaction involving Cu2+ and CO3^2-. Select all of the pairs of reactants that could be used as solutes
Draw all stereoisomers having molecular formula C6H12 that contain one double bond and give the IUPAC name for each compound.
Problem- Explain how peak width changes in the following conditions: (a) decreasing mobile phase velocity, (b) increasing particle size of packed column, (c) decreasing diameter of FSWC, (d) increasing coating film's thickness in WCOT.
Consider the hydrogenation of a carbon nitrogen double bond C=N (i.e. adding a hydrogen on the carbon and nitrogen atoms thus reducing the double bond into a single bond
1.find the ph of a 0.65 m solution of propionic acid. what is the fraction ionized at equilibrium?2. what is the
Element phosphorus occurs as tetratomic molcules P4. what mass of chlorine gas needed to react completely 963 gm of phospheras to form phospheras pentachloride
A 50.00 mL sample of the solution (1L of 0.01000M solution requires 2.14g of potassium iodate), mixed with 2 g of potassium iodide and 10.00 mL of H2SO4 , is fully titrated with 38.50 mL of sodium thiosulfate. What is the concentration of the sodi..
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