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Blood alcohol content (BAC) is often reported in weight-volume percent (w/v%). For example, a BAC of 0.08% corresponds to 0.08 g CH3CH2OH per 100 mL of blood. In Ontario, and the rest of Canada, the maximum legal BAC for fully licensed drivers is 0.08%.
Balance this equation:CH3CH2OH(aq) + Cr2O72(aq)----->CH3COOH(aq) + Cr3+(aq)acidic solution
ethyl alcohol (yellow-orange) acetic acid (green)
A Breathalyzer instrument contains two ampules, each of which contains 0.75 mg K2Cr2O7 dissolved in 3 mL of 9 mol L 1 H2SO4(aq). One of the ampules is used as reference. When a person exhales into the tube of the Breathalyzer, the breath is directed into one of the ampules, and ethyl alcohol (CH3CH2OH) in the breath converts Cr2O72? into Cr3+. The instrument compares the colours of the solutions in the two ampules to estimate the blood alcohol content. The estimate of the BAC rests upon the assumption that 2100 mL of air exhaled from the lungs contains the same amount of alcohol as one millilitre of blood. The Breathalyzer instrument typically tests 52.5 mL of exhaled breath.
(1a) If the test of such a breath sample yields a reading of 0.08%, what are the PARTIAL PRESSURE and mole fraction of CH3CH2OH in the breath of the person who was tested?
60.0 mL of a 0.450 M solution is titrated with 0.570 M . Calculate the volume of required to reach the equivalence point.
What are the molality and mole fraction of solute in a 29.3 percent by mass aqueous solution of formic acid (CH3OH)?
A liquid unknown was found to be insoluble in water and soluble in cyclohexane and alcohol; the unknown was found to have a boiling point of 58 degrees C at 670mm Hg
Calculate the osmotic pressure of a solution that contains 1.22 g of sucrose (C12H22O11) dissolved in 100. g of water at 25°C. (Assume the volume of the solution is 100. mL.)
Consider the reaction CH3Br(aq) + OH-(aq) ? CH3OH(aq) + Br-(aq). How would each of the following changes affect the rate of the forward reaction? a) addition of OH-? b) decrease in volume of the solution
every ten rounds an amplification of approximately 1000-fold. So, to get an amplification of 4.000 one would do 2 + 10 = 12 rounds . This, of course, assumes high yields for each step.
What unusual aspect of water is responsible for it unique characteristics as both a liquid and as a solid? Give examples of how this property of water would affect food systems during processing.
A proton in a linear accelerator has a de Broglie wavelength of 117pm. what is the speed of the proton?
A sample of sodium reacts completely with 0.426 of chlorine, forming 702 of sodium chloride. What mass of sodium reacted?
Many drugs that arenatural Bronsted bases are put into aqueous solution as their much more soluble salts with strong acids. The powerful painkiller morphine, for example, is very slightly soluble in water, but morphine nitrate is quite soluble in ..
If you make three serial 1:5 dilutions, using the solution above, what is the concentration of the final solution?
In an TLC experiment with paprika, which red spot is capsanthing and which is capsorbin? Is it the one that travels the farthest or least? How can You tell?
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