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Use the radius of a sodium atom from the elements handbook to calculate the number of sodium atoms in a row 5.00 cm long. Assume that each sodium atom touches its two neighbors.
Why is it that benzyl ethyl ether is named as an ether, but 3-chloro-1-ethoxybenzene has the same ether group, yet the group is named as an ethoxy instead?
Calculate the quantity, in grams, of formic acid and sodium formate necessary to make 500. mL of a buffer that has a formic acid concentration of 0.75 M and a sodium formate concentration of 0.75 M.
Solute S has a partition coefficient of 6.1 between water (phase 1) and hexane (phase 2). A 74.0 mL solution of S in water is extracted six times with 12.0 mL of hexane. Calculate the fraction of S remaining in the aqueous phase.
Find the pH of a 0.2 m solution of acetic acid. Ka for acetic acid at 25 degrees C is 1.75 x 10^-5. a.) assume ideal behavior
A copper refinery produces a copper ingot weighing 171 lb. If the copper is drawn into wire whose diameter is 8.25 mm, how many feet of copper can be obtained from the ingot?
10.0 moles of nh3 and 10.0 moles of h2 are introduced into a 2.00 l flask. at equilibrium 3.0 moles of nh3 gas remain.
For each reaction below, (a) identify the oxidation states of the atoms and (b) identify the oxidant, reductant, species oxidized, and species reduced.
The following temperature/ composition data were obtained for a mixture of two liquids A and B at 1.00 atm, where x is the mole fraction in liquid and y the mole fraction in the vapor at equilibrium.
Nitrosyl bromide, \rm NOBr, is formed in the reaction of nitric oxide, \rm NO, with bromine, \rm Br_2: \rm 2NO(g)+Br_2(g)\rightleftharpoons 2 NOBr(g) The reaction rapidly establishes equilibrium when the reactants are mixed.
What is the principal quantum number of the valence electrons in an atom lead? EXPLAIN how you got your answer.
What is the procedure for the extractions (to MAXIMIZE THE YIELD) and volumes? (i.e. How much water, NaCl, sodium bicarbonate and in what order)?
A 21.8 g sample of ethanol (C2H5OH) is burned in a bomb calorimeter, according to the following reaction. If the temperature rises from 25.0°C to 62.3°C, determine the heat capacity of the calorimeter. The molar mass of ethanol is 46.07 g/mol.
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