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Distillation was performed. 3 fractions of a mixture of octane & hexane were taken. As well as 3 fractions of a mixture of hexane& heptane. Which, if any, of the fractions obtained from each of the two distillations conducted in this experiment had boiling point ranges that suggested that these fractions were primarily one component?
How many total moles of ions are released when the following sample dissolves completely in water? 7.24x 10^20 formula units of NiCl2.
Determine the mass of Al is needed to combine with 3.077 kilo grams of Ammonium per chlorate NH 4 ClO 4 for this reaction? express your answer in units of g
consider a container of volume 250 ml that is divided into two compartments of equal size. in the left compartment
Nitrous oxide gas is used by some denatl practitioners as a anesthetic. Nitrous oxide can be produced in small quantities in the laboratory by cardful heating of ammonium nitrate. Write the unbalanced chemical equation for the reaction.
a positive ion ESI mass spectrum of a protein showed a peak at m/z = 1001 resulting from the adition of 10 protons. what is the actual mass of the uncharged protein?
A carboxylic acid can react with a strong base, such as NaOH, to produce a carboxylate salt (in this case, a sodium salt of a carboxylic acid)
question 0.100 moles of naoh are combined with 0.125 moles acetic acid. the mixture is taken to a final volume of
A typical polyethylene bag from a grocery store weighs 12.4 g. How many molecules of ethylene, C2H4, must be polymerized to make such a bag
A galvanic (voltaic) cell consists of an electrode composed of nickel in a 1.0 M nickel(II) ion solution and another electrode composed of copper in a 1.0 M copper(I) ion solution, connected by a salt bridge. Calculate the standard potential for t..
Specify whether a simple distillation or a fractional distillation would be more suitable for each of the following purifications, and briefly justify your choice.
For the unbalanced equation Cl2 ++ KI = I2 + KCl - how many moles of the second reactant would be require to react exactly with the 0.275 mole of the first reactant
Write the structures of all dimethylcyclobutanes. Specify those that are chiral. Show the planes of symmetry in those that are not. Explain.
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