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The molar mass of an oxygenated hydrocarbon substance is 88.0 g / mole.Its composition is as follows:O:36.4%,H :9.0%,C:54.6%.Calculate the empirical formula and molecular formula.(use atomic mass C=12.0,H=1.0,O=16.0)
Calculate partition coefficient of caffeine between water and each of two organic solvents. (c) Can you use diethyl ether to extract caffeine from water? Why/why not.
Draw the major product for each of the following reactions. Make sure that you draw a major product that could be isolated, not just an intermediate or something that would be present only in low equilibrium population.
What volume of 0.25 M HNO3 (aq) reacts with 4.8 ml of 0.150 M Na2CO3 (aq) when the two solutions are mixed?please show work step by step.
If a 220 piece of gold (density =19.32 ) is hammered into a sheet measuring 2.3*1.0 ft. , what is the average thickness of the sheet in meters?
What is the maximum mass in grams of NH3 that can be produced by the reaction of 1.0g of N2 with 3.0g of H2
What max of water can be heated from 15 degrees C to 100 by burning this piece of cool
The freezing point for t-butanol is 25.50 degrees C and kf is 9.1 degrees C/m. Usually t-butanol absorbs water on exposure to the air. If the freezing point of a 10.0 g sample of t-butanol is measured as 24.59 degrees C, how many grams of water ar..
Solid CrF3 contains a Cr(III) ion surrounded by six F- ions in an octahedral geometry all at distances of 190 pm. However, MnF3 is in a distorted geometry with Mn-F distances of 179,191, and 209 pm (two of each).
A 3.5514 g of a chromium oxide was found to contain 2.4299 g of chromium and 1.1215 g oxygen. What is the empirical formula for this chromium oxide
Reaction kinetics - Determination of the activation energy of the reaction between oxalic acid and potassium permanganate.
The entry of Na+ provides a free-energy input of 10.8 kJ/mol under typical cellular conditions (external [Na+] = 143 mM, internal [Na+] =14 mM and a membrane potential = -50 mV). What is the ratio of glucose concentration outside and inside cells?
If a buffer solution is 0.220 M in a weak acid (Ka = 8.5 × 10-5) and 0.550 M in its conjugate base, what is the pH
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