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For the titration of 87.95 mL of 0.1311 M NaOH with 1.2586 M HBr, find the pH equivalence point (ve) in mL of the solution within the receiving flask when 0 mL of HBr is added.
A 1.00 g sample of an unknown gas occupies 418 mL at 23.0 oC and 715 torr. Calculate the density at 23.0 oC and the molar mass of the gas.
For the titration of 87.95 mL of 0.1311 M NaOH with 1.2586 M HBr, find the pH of the solution within the receiving flask when 0 mL of HBr is added.
Which set of atoms is correctly arranged in order of increasing electronegativity (lowest electronegative atom listed first)?
For the titration of 50.00 mL of 0.02000 M 2-(N-Morpholino)ethanesulfonic acid with 0.09900 M NaOH, calculate how much titrant (mL) is required to reach a pH of 9.29 mL in the receiving flask.
A gas is initially at 1.2 atm, 15.0 L, and O°C. What is the final pressure when the same amount of gas is heated to 10°C and the volume changed to 16.0 L
A student used 22.0 mL of 0.1035 M NaOH to titrate 20 mL of orange juice. How many grams of citric acid were present in the sample? The molar mass of citric acid, H3C6H5O7, is 192.12 g/mol. H3C6H5O7
What volume of 6.00 M sodium hydroxide in milliliters must be diluted to 220.0 mL to make a 1.50 M solution of sodium hydroxide
What mass of NO2 can be produced by the complete reaction of 40.00 g of ammonia with 98.00 g of oxygen: 4NH3 + 7O2 4NO2 + 6H2O
a box contains 126000 red marbles and 885000 yelllow marbles. What sample size is required to reduce the sampling standard deviation of red marbles to 1.85%
Protein X contains 16.78% nitrogen. A 0.4100 mL aliquot of protein X solution was digested, and the liberated NH3 was distilled into 10.00 mL of 0.02260 M HCl. Unreacted HCl required 3.07 mL of 0.01
find the voltage (v) of the cell if the right half-cell contains 0.4880 M AgNO3(aq) and the left half-cell contains 0.0093 M Cd(NO3)2.
Which one of the following is the correct formula resulting from a combination of the common ions from these elements: Li and S
For each of the five principles of biochemistry give an example(step or series) from a biochemical pathway that satisfies each principle
How would you demonstrate that phosphoglycerate mutase uses an enzyme bound phosphate
explain the molecular mechanism of how ATP synthase produces ATP
Why is the structure of FMN and Coenzyme Q important for the function of the electron transport chain
Calculate how much energy in the form of heat is available from 100mL of this mixture and compare it with the amount available from pure gasoline
There are two sources of oxaloacetate for entry into gluconeogenesis. how could you experimentally determine the relative contribution of each of these sources to the overall flux oxaloacetate throu
How would you experimentally demonstrate whether the newly entering acetyl group from the breakdown of glucose is or is not the carbon oxidized in the citric acid cycle? Show your work and draw out
Starting with 1-pentanoic acid and using any other reagents, outline synthesis for 1-penten-2-ol
The barometric pressure was 768.6 mmHg when the open end manometer attached to a flask holding a gas read 13.0 mmHg. (mercury level highest on the side connected to the flask.) what is the pressure
A (identical to the starting ester) and E. Propose a neutral structure for each compound that is consistent with the data. Note that the absolute stereochemical configurations of chiral substances c
A compound A has prominent infrared absorptions at 1050, 1786, and 1852 cm-1 and shows a single absorption in the proton NMR spectrum
Compound A reacts with water to give dimethylmalonic acid and with methanol to give the monomethyl ester of the same acid. (Compound A was unknown until its preparation in 1978 by chemists at the Un