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Barium sulfate, , 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 380 of a saturated barium sulfate solution, how much toxic ion has the patient consumed? The solubility product of is.
How many L of O2 gas at STP, are needed to react with 15.0 g of Na using the following chemical reaction: 2Na(s) + O2(g) => 2NaO(s)?
A 2.154 g sample of HgO produces 125 mL of oxygen gas. The gas is collected over water at 24 C and an atmospheric pressure of 763 torr.
determine the end value of n in a hydrogen atom transition, if the electron starts in n=2 and the atom absorbs a photon of light with a frequency of 4.57X10^14 Hz
The half-life for the reaction at 550 C is 81.3 seconds. How long does it take for 78.5% of a phosphine sample to decompose?
calculate the amount of heat required to vaporize 8.48g of water at its boiling point
You have a 100.0- mL graduated cylinder containing 50.0 mL of water. you drop a 115-g piece of brass into the water. To what height does the water rise in the graduated cylinder.
A gaseous mixture of O2 and Kr has a density of 1.114 g/L at 431 torr and 325 K.What is the mole percent O2 in the mixture.
What mass of HClO4 should be present in 0.600 L of solution to obtain a solution with a pH of 2.50?
How much ice in grams would have to melt to lower the temperature of 358 g of water from 40 degrees to 0 degrees? (Assume that the density of water is 1.0 (g/ml)
At a pressure of 1.00 atm and a temperature of 20 degree Celsius, 1.72 g CO2 will dissolve in 1 L of water. How much CO2 will dissolve if the pressure is raised to 1.35 atm and the temperature stays the same?
Calculate the molarity of 52.56 grams of Al2(SO4)3 in 1.80 L of solution.
What volume and mass of steam at 100 degrees celsius and 760 torr would release the same amount of energy as heat during condensation as 65.5 cm(cubed) of liquid water would release during freezing?
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