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A BaSO4 slurry is ingested just before the gastrointestinal tract is x-rayed because it is opaque to x-rays and defines the contours of the tract. Ba2+ ion is toxic, but the compound is nearly insoluble. If ?G° at 37°C (body temperature) is 59.1 kJ/mol for the process below.
BaSO4(s) reverse reaction arrow Ba2+(aq) + SO42-(aq)
What is [Ba2+] in the intestinal tract? (Assume that the only source of SO42- is the ingested slurry.)
Use a molar mass of 800g/mol for the vegetable oil and use a density of 0.88g/mL for vegetable oil and 0.79 g/mL for methanol to calculate how many moles of ethanol are used.
If the frequency of light emitted by potassium is 9.06E14 Hz, what is the corresponding wavelength associated with this frequency in nanometers
Solids generally expand as the temperature increases. Such an expansion results from an increase in the bond length between adjacent atoms as the vibrational amplitude increases.
Oxygen-15 has a half-life of 124 seconds. You begin with a 429 mg sample of oxygen-15. You wait 6.20 minutes. What is the total amount of time in seconds
Oxygen gas is commonly sold in 45.5 L steel containers at a pressure of 131atm .What volume (in liters) would the gas occupy if its temperature was raised from 20.0 C to 35.5 C at constant 131 atm
The models you have just studied represent achiral molecules. Their mirror images are identical. They are optically inactive. Any molecule that has a plane of symmetry is achiral.
What volume of methanol is formed if 3.11×1011 of methane at standard atmospheric pressure and 25 is oxidized to methanol
What is the van't Hoff factor, i, for the solution. How would the value of i change as the solution becomes more concentrated. Explain.
Calculate the heat of combustion of napathalien on a molar basis. Find the molar heat of comb.: q/1 mol. of napthalien
Ethanol melts at -114 C and boils at 78 C. The enthalpy of fusion of ethanol is 5.02 kJ/mol, and its enthalpy of vaporization is 38.56 kJ/mol. The specific heats of solid and liquid ethanol are 0.97 J/g.K and 2.3 J/g.K, respectively.
when sulfuric acid is a component of polluted air it chemically attacks statues memorials and monuments made from
Consider two different solutions of the same UV-absorbing compound. Upon UV-analysis, Solution B gave an absorbance of 1.5 and Solution A gave an absorbance of 0. 5 at the same wavelength. Solution B is higher in concentration by what ratio (or per..
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