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Iodine-131 is used in the form of sodium iodide to treat thyroid cancer. The isotope has a 1/2 life of 8.05 days. If you begin with 25.0 mg of radioactive Na^131I, what mass remains after 32.2 days?
It takes 47.0 to raise the temperature of an 10.6 piece of unknown metal from 13.0 to 24.7. What is the specific heat for the metal?
100 mol/h of n-octane is burned in 80.0% excess air to 95.0% conversion. What is the molar flow rate of N2 in the stack gas if The n-octane is converted to a mixture carbon monoxide, carbon dioxide, and water, where the ratio of CO2 to CO is 4:1?
To learn how to calculate the solubility from Ksp and vice versa. Consider the following equilibrium between a solid salt and its dissolved form (ions) in a saturated solution:
Calculate the equilibrium concentration of each compound if 3.10 moles of COBr2 are placed in a 3.00 liter flask at a certain temperature. Kc = 0.140 for the reaction at this temperature.
barium hydroxide solution PH = 10.5 is needed. How many grams of Barium hydroxide are needed
A mixture of nitrogen and hydrogen was allowed to come to equilibrium at a given temperature according to 3H2+N2 2NH3. At equilibrium, the mixture contained
Based on your knowledge of the mechanism involved in the nitration of methyl benzoate, what role(s) would you expect sulfuric acid to play in the nitration of benzaldehyde?
3H2 + N2 -> 2NH3. At 200 degrees C in a closed container, 1.00atm of nitrogen gas is mixed with 2.00atm of hydrogen gas. At equilibrium, the total partial pressure is 2.00atm.
An injection containing 10.0pg 10 5 B was injected into a patient suffering from a brain tumor. The patient was irradiated by a neutron gun at the site of the tumor.
If 1.00 mole of HI is put into an evacuated 1.00-liter container at 490 degrees C and allowed to reach equilibrium, how much H2 will be present at equilibrium in the reaction H2(g) + I2(g) 2HI, K=45.9 at 490 degrees C?
What is the molarity of a solution made by dissolving 5.69 g of sodium acetate in water and diluting to 750. mL? (molar mass NaC2H3O2 is 82.0 g/mol.)
Find the concentration of Pb2 in 0.0010 M KI saturated with PbI2. Include activity coefficients in your solubility-product expression. The Ksp of PbI2 is 9.8× 10-9. Hint from sapling below: Including activity coefficients, the solubility-product e..
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