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In a set of blood samples taken from a patient at different time, the cholesterol level was tested and the final result was 256(pm) 8 mg/dL. Presuming the distribution of this patients cholesterol level measurements follows the Gaussian rule explain what is the possibility that a sample contains the cholesterol level between 244 mg/dL and 275 mg/dL
Explain why selectivity in isocratic HPLC system ideally should not depend on eluent composition. (Use thermodynamic derivation to support your explanation).
A gaseous fuel mixture stored at 744mmHg and 298 K contains only methane and propane. When 13.0L of this fuel mixture is burned, it produces 769kJ of heat. What is the mole fraction of methane in the mixture?
how many grams of caco3 are produced when you react 55.2 ml of 0.150 m cano32 with 0.655 grams of na2co3?nbsphow many
For 550.0 mL of pure water, calculate the initial pH and the final pH after adding 0.010 mol of pH
Calculate the work done when 25.0 g of tin dissolves in excess acid at 1.00 atm and 29°C. Assume ideal gas behavior.
sunlight with a wavelength greater than 240nm. What is the energy available for the dissociation of molecular oxygen at 200nm?
A 800 mL sample of a saturated aqueous solution of calcium oxalate, CaC2O4, at 95 degrees C is cooled to 13 degrees C. How many milligrams if calcium oxalate will precipitate?
A certain first-order reaction has a rate constant of 2.95×10-2s-1 at 22°C. What is the value of k at 61°C if Ea = 80.0kJ/mol ?
How does the hydrogen ion (H+) [or the hydronium ion (H3O+)] and the hydroxide ion (OH-) fit into all of this? What is their role in this reaction?
at a constant temperature which of the following would be expected to affect the rate of a given chemical reaction?1.
the working substance of an engine is 1.00 mol of a diatomic ideal gas. the engine operates in a cycle consisting of
Why is a reaction that is performed in ethanol considered "greener" than a reaction that uses dichloromethane as a solven
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