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Barium sulfate, BaSO4 , is used in medical imaging of the gastrointestinal tract because it is opaque to X rays. A barium sulfate solution, sometimes called a cocktail, is ingested by the patient, whose stomach and intestines can then be visualized via X-ray imaging. If a patient ingests 240 mL of a saturated barium sulfate solution, how much toxic Ba2+ ion has the patient consumed?The solubility product Ksp of BaSO4 is 1.1*10^-10 .
Express your answer to three significant figures and include the appropriate units.Mass of Ba2+ =
Air bag in automobile inflate when sodium azide, NaN3 rapidly decomposes to its components elements: 2NaN3 (s)= 2Na(s) + 3N2 (g). How many moles of N2 are formed by the decomposition of 2.50 moles of NaN3
Zinc is reacted with hydrocloric acid to make hydrogen gas and zinc chloride. when 42.86 g of zinc is added to 40.11g of hydrochloric acid, 63.22g of zinc chloride were collected.
Given that the standard enthalpy of formation of atomic hydrogen, H(g), is -219.0 kJ/mol, find the standard reaction enthalpy for the reaction H2(g) -> 2H(g) (calculate result in kJ/mol and give the numerical value)
Construct a frost circle for imidazole with one 2p orbital on each atom of the ring, and show relative energy of all pi molecular orbitals. fill in the appropriate number of electrons
The compound 1-iodododecane is a nonvolatile liquid with a density of 1.20g/ml. the density of mercury is 13.6g/ml. what do you predict for the hight of a barometer column based on 1-iodododecane, when the atmospheric pressure is 752 torr
calculate total heat in (J) needed to convert 0.333 mol of gaseous ethanol at 300 degress celsius and 1 atm to liquid ethanol at 25 degress celsius and 1 atm
Imagine that a chemist has cyclohexanone, triphenylphosphine, butyllithium, and 2-bromobutane.
Titrated three different samples of KHP and determined that the sodium hydroxide molarity was 0.1234 M, 0.1244 M, and 0.1199 M, respectively. Calculate the sample mean and the sample slandered deviation?
explain why the chemical formulas AlCl3, PCl3 and CoCl3 are so similar, yet their names are so different.
The activation energy of an uncatalyzed reaction is 89 kJ/mol. The addition of a catalyst lowers the activation energy to 57 kJ/mol.
A 250-L tank is evacuated and connected to a 50.0-L bulb filled with compressed argon. After they are joined, the pressure in the bulb falls to 2.20 atm.
Calculate the rate constant and half- life for the radium decay. Starting with 1.0 g of the radium sample, what is the activity after 500 years? The molar mass of ra-226 is 226.03 g/mol.
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