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Determine the ionization constant of a 0.0070 aqueous ammonia solution with an OH- concentration of 3.46 x 10^-4 M.
The molecular weight of ibuprofen was determined by mass spectroscopy to be 206.287 g/mol. What is the molecular formula for ibuprofen?
Sketch the curves for (A) the titration of a typical weak acid (30.0ml of 0.10 M) with a strong base (0.10 M) and (B) the titration of a typical strong base
Initially, the left compartment contains 1.0mol of N2, the middle contains 3.0 mol of O2, and the right contains 4.0 mol of H2 at 298 K. Calculate the Gibbs energy and entropy of mixing when the partitions are removed.
Consider the titration of 100.0 mL of 0.100 M NaOH with 1.00 M HBr. Find the pH at the following volumes of acid added Va= 0, 1, 5, 9, 9.9, 10, 10.1, and 12 mL
When numbers are very small or very large, it is convenient to either express the value in scientific notation and/or by using a prefix with the unit.
When the following reaction is balanced in basic solution using the lowest possible whole number coefficients, the coefficient of H2O will be: CN-(aq) + MnO4-(aq) --> CNO-(aq) + MnO2(s)
Why are some covalent bonds polar and others aren't? Understand why the covalent bonds of water are polar and those in the hydrogen molecule (H2) are non-polar.
What would happen to the A450 valure for a sample as test tube#10(is included 1ml of 0.0025M Fe(NO3)3 , 1ml of 0.0025M KSCN, and 5ml of 0.1M HNO3 ) ,if accidentally added 5 drops of disodium hydrogen phospate
Use the PhET to complete the sentences describing how electronegativity is related to bond dipole experienced by the molecule.
What is the mass in grams of CO2 that would be produced if 52.0 g of C5H8O4 were allowed to react completely in excess oxygen?
For 2,5-dimethylhexane, draw a Newman projection (looking down the C3-C4 bond) representing the most stable conformation, least conformation and a gauche conformer
What is the FORMULA for the limiting reagent? What is the maximum amount of potassium carbonate that can be formed in grams?
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