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Automobile antifreeze is made by mixing equal volumes of ethylene glycol (d=1.114 g/mL, MW= 62.07 g/mol) and water (d=1.00 g/L, MW= 18.02 g/mol). Assume that the volume are additivr, calculate concentrationin the following units:
a) molarity b) weight/volume percent c) volume/volume percent
A substance has a molecular mass of 100g/mol. How many ug are in a 700mm3 volume of a 2mM solution?
A urine sample was found to have a pH of 5.83. What would be the ratio of the unprotonated form, A, to the protonated form, HA, for uric acid in this urine sample?
The intermediate from Step 1 reacts in Step 2 to form a compound with two sp3 hybridized atoms. Overall: One bond is formed and one bond is broken. One of the products has a bent molecular geometry and smells like rotten eggs.
A photon having E = 46.9 keV energy scatters from a free electron inside a metal. What is the maximum energy the electron can gain from the photon
reacting 5g of salycic acid with an excess of acetic anhydride
A student measures the volume of water delivered by a 1 mL volumetric pipette several times and records measurements of 1.00, 0.97, 1.03, 1.01 and 1.03 mL. What is the average of the five measurements. Report your answer to 5 significant figures a..
Use the formula for ?G to find ?G for a reaction if ?G° = 7.27 kJ?/?mol, T = 282 K, R = 8.31 × 10?3 kJ?/?mol?•?K, and Q = 0.67. Also, tell whether the reaction will shift toward the products or reactants to reach equilibrium
Balance the following reaction and predict the number of moles of SO2 required to completely react with 3.0 moles of 0.2 SO2+O2---->SO3
What is the blood pressure drop (in units of mm Hg)from inlet to outlet if the hemodialyzer is orienteda) horizontally (with the blood inlet and blood outlet at the same height)?
Compute the amount of heat required to boil 92.1 grams of benzene (C6H6), start from a temperature of 42.5 degrees Celsius.
how does the rate of formation of O2 compare to (a) the rate of formation of H2O and (b) the rate of disappearance of H2O2?
when a current of 0.156A is passed through a solution of lead(II) nitrate, lead is deposited at the cathode. How long will it take to deposit 0.10g of lead?
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