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Give two reasons why a 100% yield is not obtained in actual chemical manufacturing processes.
Methane is burned in a Laboratory Bunsen burner to give CO2 and water vapor. Methane gas is supplied to the burner at the rate of 5.0 L/ min ( at temperature of 28° C and a pressure of 773 mm Hg)
the dissolution of nh4clo4 in water is endothermic with change of h33.5kjmol. if you prepare a 1.00m solution of
Aldrin (an insecticide) has a logKow of 5.8, while atrazine (an herbicide) has a logKow of 2.6. Kow is the octanol-water partition coefficient (Spiro pp. 498). Which pesticide will bioconcentrate to a greater extent
You need to produce a buffer with pH = 4.1 by dissolving a weighed amount of sodium formate (FW = 68.0072) in 500-mL of 0.45-M formic acid
Why do you think we need to convert the calcium carbonate to calcium chloride befoe we do our EDTA titrations? What specific condition in our titrations require this?
Each cube measure 2.0 cm on each side.After you carefully lower each cube into the water of its own cylinder, what will the water level be in each cylinder?
A compound is known to contain 52.17% carbon and 27.78% oxygen by mass. Each molecule contains two atoms of oxygen. What is the molar mass of this substance
The density of helium is .01784g/l at S.T.P. I a given mass of helium at S.T.P is allowed to expand to 1.500 times its inital volume bu changing the temperature and pressure,
a solution of malonic acid h2c3h2o4 was standardized by titration w.1000m naoh solution. if 20.76 ml of the naoh
Write balanced equation for the following reaction of aqueous of feCl3, and Mg3(po4)2 to give FePo4 and MgCl2. Molecular Equation. Ionic Equation. Net ionic equation. What the name of this type of reaction. Which ions are spectator ions
The ache or "burn" you feel in your muscle during strenuous exercise is caused by the accumulation of lactic acid. The hydrogen atom of the COOH group is acidic
A solution is prepared by dissolving 35.0 g of hemoglobin (Hb) in enough water to make up 1 L in volume. If the osmotic pressure of the solution is found to be 10.0 mmHg at 25 oC, calculate the molar mass of hemoglobin
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