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A solution of household bleach contains 5.25% sodium hypochlorite, NaOCl, by mass. Assuming that the density of bleach is the same as water, calculate the volume of household bleach that should be diluted with water to make 500.0 mL of a pH = 9.80 solution.
When 2.20 grams of Cr(CO)6 reacts according to the following equation at 400 °K in a closed system the temperature goes down and 5.2 kJ of hear is absorbed
The cuvette used had a 1.00 cm sample pathlength. The measured absorbance was 0.180. What was the concentration of hemoglobin in the solution. What would the absorbance of the previous solution be if the pathlength were 1.80 cm
Acetominophen is a weaker acid than carbonic acid but asprin is a stronger acid than carbonic acid. prepare the flow chart diagram like the one in this experiment, showing the procedure that can be used to separate the a mixture of sucrose, aspiri..
determine the pressure inside a container of a gas connected to an open-end manometer filled with ccl4 has the density
Describe Newman projection. Experiments have shown that for 1,2-dichloroethane, ClCH2CH2Cl, in carbon tetrachloride solution at 25C, 70% of the molecules are in the anti and 30% are in the gauche conformation
2NaCl + H2SO4 --> 2HCl + Na2SO4 How many grams of HCl can be prepared from 2 mol H2SO4 and 2.56 mol of NaCl
What mathematical expresssion will yield the correct volume at 177 degrees celsius and 400mgHg?
magnesium has three naturally occurring isotopes 24mgisotopic mass 23.9850 amu abundance 78.99 25mgisotopic mass
How much difluoroacetic acid (d = 1.526g/cm^3 MW = 96.033) should be transferred to a 500 mL volumetric flask that's half full of water to generate
Cobalt-60 is commonly used as a source of B-particles. How long does it take for 87.5% of a sample of cobalt-60 to decay, given that the half-life is 5.36 years?
calculate the amount of heat in joules (q) required to affect this temperature change and the total change in internal energy, ?U. Note that some books use ?E as the symbol for internal energy instead of ?U.
Calculate the molarity of a solution made by dissolving 0.150 mol Na2SO4 in enough water to form exactly 760 mL of solution.
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