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For which of the following general classes of compound do the member NOT exhibit a common structural feature or function?
a. lipidsb. vitaminsc. proteinsd. enzymese. nucleic acids
A compound with the molecular weight of 391.98 was determined to be 3.1 % Hydrogen, 31.5 % Phosphorous, and 65.4% Oxygen. Determine the empirical formula and molecular formula for the compound.
determine the molecule weight of the liquid and the density of the vapor under these condition?
What mass of potassium bromide residue remains if 500.0 mL of 0.200 M potassium bromide solution are evaporated to dryness?
An element X forms the oxalate complex X2C2O4 which is 7.91% C and 21.07 % O by mass. What is the identity of the Element X
a 322 ml container holds 0.146 g of ne and an unknown amount of ar at 35degc and a total pressure of 635 mmhg.
Choose the selection which gives the correct number of and bonds present in one molecule or ion of ozone, O3. Make the central atom in your Lewis structure follow the octet rule if possible.
3.6ml of m-xylene(d=0.864 g/ml) is reacted with 0.6g of pthalic anhydride and 0.2 g of ALCL3 to obtain the product. the actual yield is 0.36g. using this data answer the following.
Show that the van der Waals and Redlich-Kwong equations of state reduce to the ideal gas equation of state in the limit
A 2 cm string is fastened at both sides is plucked. What is the wavelength of the n = 4 standing wave? How many nodes does it contain?
What alcohol would be most easily dehydrated. One that is on a long chain or a short chain
the enzyme acetylcholinesterase,which has a turnover rate of 25,000 s-1. Calculate how long it takes the enzyme to cleave one acetylcholine molecule.
A solution consists of 0.450 mole of pentane, C5H12, and 0.250 mole of cyclopentane, C5H10. What is the vapor pressure of pentane in this solution at 25°C?
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