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The barium ion is toxic to humans. However, barium sulfate is commonly used as an image enhancer for gastrointestinal x-rays. What does this imply about the position of the equilibrium shown below.
BaSO4 Ba+2 + SO4-2
Make a rough sketch showing how the following properties of a baseball depend on time, from the moment it is hit high into left field to the time it is caught by the outfielder. You may neglect the effects of friction!
When one mole of H20(g) is condensed to 1 mole of H20(l) at 1.00 atm and 100C, 40.66 kJ of heat is released. If the density of H20(l) at this temperature and pressure is .996 g/cm^3, calculate
The lengths of chemical bonds in H2 and in other compounds formed from hydrogen isotops is about .74 x 10^-10 m. Estimate the bond length in molecules where the muon replaces the electron.
The letter designations for the first four sublevels with the number of electrons that can be accommodated in each sublevel are what
One synthetic preparation of aniline involves reducing nitro benzene with iron and HCL, and then steam distilling the resultant aniline at 99 degrees Celsius. How much aniline codistills with each gram of water during the steam distillation.
Question- An important reaction that takes place in a blast furnace during the production of iron is the formation of iron metal and CO2 from Fe2O3 and CO.
How many grams of KCOOH are needed to prepare 150 ml a buffered solution of pH 3.85 if the acid concentration, HCOOH is 0.1M
Hemoglobin is the protein that transports O2through the blood from the lungs to the rest of the body. In doing so, each molecule of hemoglobin combines with four molecules
What is H in kJ for the process of freezing a 28.9 g sample of liquid silver at its normal melting point of 961 oC.
What is the density of mercury in pounds per cubic inch (lb/in3)? What are some of the physical and chemical properties of Mercury?
the delta H OF vaporization for a new substance is 45 kj/mol and its delta H sublimation is 62 kj/mol, how much energy is needed for freezing 2.75 mol of a substance
How many ml of 94 w/w% sulfuric acid (d=1.84 g/cm^3) is necessary for the preparation
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