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A liquified mixture of n-butane, n-pentane and n-hexane has the following composition in weight percent:
n-C4H10 50%
n-C5H12 30%
n-C6H14 20%
Calculate the (a) weight fraction (b) mol fraction (c) mol percent of each component (d) mass of 5 moles of the mixture.
Is it true that an HCl/NaCl mixture will act as a more effective buffer than a mixture of CH3COOH & CH3COONa
the density of aluminum is 2.70 gcm3 and the density of chronium is 7.19 gcm3. if equal masses of aluminum and chronium
Draw the structure for the following and report what conformation will be favored over the other cis-1,2-dimethylcyclohexane trans
The unit cell in a crystal of diamond belongs to a crystal system different from any we have discussed. The volume of a unit cell of diamond is 0.0454 nm^3 and the density of diamond is 3.52 g/cm^3. Find the number of carbon atoms in a unit cell of..
The following results were obtained for the determination of sulfur in a coal sample. The average for 4 trials was 1.94 %S with a standard deviation of 0.04 %S. Based on these data, report the 95% confidence limits for the average sulfur content.
Consider the titration of 30.0 mL of 0.048 M NH3 with 0.025 M HCl. Calculate the ph after the following volumes of titrant have been added.
consider a stone column 3.00 ft in diameter and 10.00 ft high. What is is mass in pounds if its density is 3.50 g/mL.
A beaker with 1.90×10 2 mL of an acetic acid buffer with a pH of 5.000 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100.
Using the table of reductions values explain why silver ion is the reactant and why silver metal is a sacrificial anode that protects mercury from oxidizing into mercury(I) or mercury(II) ion.
find the wt percent of C and H. find the smallest integer ration of C:H in the compound
Calculation of stoichiometric points of inflection on a titration curve is very useful in choosing indicators that will change color (have an end point) at the equivalence point. How does an end point differ from an equivalence point
Given an aqueous solution in which the [H+]=2.5 x 10^-7, what is the molar hydroxide ion concentrate
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