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The delta 18 O value of modern seawater is 0% while the average value of the polar ice cap is -45%. The ice cap holds 2wt% of the oceanic water. Calculate the delta 18 O value of an ice-free ocean.
A separate experiment is conducted in which 4.82 x 10-5 M CaI2(aq) is added to a solid solution of PbI2 at 20 oC. Qualify how the molar solubility changes
Liquid-in-glass thermometer are of two types:mercury in glass and alcohol plus red dye in glass. the dependence of volume on temperature of mercury and alcohol.
What is the concentration of P retained in the soil (in mg P/kg)? What is the concentration of PO4 retained by the soil (in mg PO4/kg)?
A critical reaction in the production of energy to do work or drive chemical in biological systems is the hydrolysis of adenosine triphosphate, ATP to adenosine diphosphate ADP as described by ATP
the elemental mass percent composition of ascorbic acid (vitamin C) is 40.92% C, 4.58% H, and 54.50% O. Determine the empirical formula
suppose that cells are grown on amino acids that have all been labled with 13C at the alpha carbons. identify the atoms in cytosine and guanine that will be labled
If aluminum is diffused into a thick slice of silicon with no previous aluminum in it at a temperature of 1100?C for 8 hours, what is the depth below the surface at which the concentration is 1016 atoms/cm3 if the surface concentration is maintain..
If you take a 10.0-mL portion of the stock solution and dilute it to a total volume of 0.230 L, what will be the concentration of the final solution?
zinc hydroxide is insoluble in water but dissolves when nitric acid solution is added
An unknown sample with a molecular mass of 180.og is analyzed to yeild 40% c, 6.7% H, and 53.3% o. What is the empirical formula and the molecular formula of this compound?
Determine how many liters of O 2 gas should be mixed at constant temperature and pressure?
In high spin complexes, the crystal field splitting energy is small and in low spin complexes, electrons are concentrated in the lower energy orbitals.
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