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A toxic, binary, gaseous oxide is 63.65% nitrogen by mass. determine its empirical formula.
Calculate the volume of liquid H2O formed if the reaction goes to completion and you condense the water vapor.
In a titration of HNO3, you add a few drops of phenolphthalein indicator to 50.00 mL of acid in a flask. You quickly add 26.50 mL of 0.0502 M NaOH but overshoot the end point, and the solution turns deep pink.
Calculate the pH at the equivalence point for the titration of 0.25 M CH3COOH with 0.25 M NaOH. (For CH3COOH, Ka= 1.8 × 10^-5)
Compute the molar mass of the noble gas krypton(Kr) in a natural sample, which is 2.2% 80 Kr (molar mass 79.91 g/mol),
Hemoglobin is the protein that transports O2 through the blood from the lungs to the rest of the body. In doing so, each molecule of hemoglobin combines with four molecules
when sodium reacts with chlorine 411 kjmol is released. calculate the amount of heat released if 1.37 mol of sodium
Consider the titration of 25.0 mL or 0.010 M Sn^2+ by 0.050 M TI^3+ in 1 M HCL, using pt and saturated calomel electrodes to find the endpoint.
What is the particular advantage to know the penetration depth of X-rays impinging upon the sample when performing XPS analysis.
Find the pH of a solution and other stuff like that. How do I know what to do when dealing with different combinations of strong/weak acids and bases in regards to titration and buffers
How many ppm Pb2 ion are contained in this solution? How many ppm of nitrate ion are contained in the same solution?
which of the following will be more soluble in acidic solution than in pure water?
Nitric acid is usually purchased in a concentrated form that is 70.3% HNO3 by mass and has a density of 1.41 g/mL. How much concentrated solution would you take to prepare
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