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Sulfur-35 is used in some medical procedures. The physical half-life of S-35 is 87.2 days. If the effective half-life of S-35 in the body is 76.4 days, what is its biological half life?
Assume that the partition coefficient, K, for partitoning of compound A between diethyl ether and water is 3; that is, A preferentially partitions into ether.
An experiment shows that a 153-mL gas sample has a mass of 0.171 g at a pressure of 761 mm Hg and a temperature of 32oC. What is the molar mass of the gas? R=0.0821 L atm / mol K
A helium-filled weather balloon has a volume of 815 L at 22 oC and 752 mmHg. It is released and rises to an altitude of 7.16 km, where the pressure is 364 mm Hg and the temperature is -25oC
How many kilojoules of heat are required to melt a 10.0-g popsicle at 0 C? Assume the popsicle has the same molar mass and heat of fusion as water.
Exactly 10.2 mL of water at 31.0 degrees celsius are added to a hot iron skillet. All of the water is converted into steam at 100 celsius. the mass of the pan is 1.05kg and the molar heat capacity of iron is 25.19 J/(molXC).
Draw a diagram showing the stratification in a body of water. Label the different layers and describe the type of chemistry (and species) that occurs at each level.
What is the maximum number of electrons that can populate a given orbital there (b) Write the electronic configuration of the element with atomic number 8 in the periodic table. Formatting: superscript numbers where appropriate but omit parenthese..
Draw a saturated and unsaturated hydrocarbon with 4 carbons in length and give their IUPAC
Calculate the pH for each of the following cases in the titration of 50.0 mL of 0.190 M HClO(aq) with 0.190 M KOH(aq). The ionization constant for HClO can be found here.
In which of the following organ does both physical and enzymatic digestion of lipids occur
describe that means you have to write in detail how to prepare an aqueous 5.0 f solution of acetic acid ch3cooh. you
From experimental data for rate of disappearance of CH3CHO, derive the rate law and the rate constant, k (with units).
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