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A 0.250 L aqueous solution contains 50.0 g of ethanol, C2H5OH. Calculate the molar concentration of the solution in mol·L-1.
you take 3.1789 g of a substance and place it into 100.0 g of benzene. the boiling point of this solution is found to
he heat of vaporization of liquid water is 40.67 kJ/mol , and the molar heat capacity is 75.3 J/(K*mol) for the liquid and 33.6 J/(K*mol) for the vapor.
thyroxine an important hormone that controls the rate of metabolism in the body can be isolated from the thyroid
How many cubic centimeters are in an 8.00 oz bottle of cough medicine? (1.00 oz=29.6 mL)
Explain an unknown acid is a diprotic acid can donate 2 proton. 0.954g of the unknown acid is titrated with 0.509M NaOH.
Aluminum readily displaces hydrogen in sulfuric acid according the following balanced reaction: 2Al(s) + 3H2SO4(aq) = Al2(SO4)3(aq) + 3H2(g). How many moles of Al and how many moles
A weak acid (HA) has a pKa of 4.015. If a solution of this acid has a pH of 4.443, explain what percentage of the acid is not ionized. Presume all H in solution came from the ionization of HA.
Hydroxyapatite is the major mineral constituent of bone. The unit empirical formula for hydroxyapatite is Ca5(PO4)3(OH). List the elements found within hydroxyapatite in alphabetical order, written in lower case letters, and separated by commas and s..
100.0mL of 0.400 mol/L CoCl2 (aqueous) is mixed with 100.0mL of 1.600 mol/L NaOH. Determine the moles of precipitate which form, and the molarity of each ion (including spectator ions) after the precipitation process is complete
that of the Ce(III)/Ce(IV) system is +1.44V, calculate the potential at the following points during the titration of 100 ml of 0.05M Fe(II) with 0.05M cerium (IV)
A 380. mL container holds 0.146 g of Ne and an unknown amount of Ar at 35°C and a total pressure of 630. mmHg. Calculate the moles of Ar present.
Consider the reaction A+2B = C whose rate at 25 C was measured using three different sets of initial concentrations as listed in the following table: Trial Rate 1 0.25 0.010 7.5×10?4 2 0.25 0.020 1.5×10?3 3 0.50 0.010 3.0×10?3 Part A What is the r..
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