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A Certain compound has a half-life of 14 minutes at 25C. Its decomposition is a first order process. How much time does it take for a 12 mol sample of this compound decays to 1.5 mol? A: 22 min B:42 min C:25.5 min D:12 min E:18 min
We had a 0.10 M solution of acetic acid in water. We then placed 2 mL of the 0.10 M solution and 2 mL of toluene into a dropper and mixed. We did some magic and had
What is the reducing agent and what has been reduced c. What quantity of iodine can be obtained if 20.0g of NaI is mixed with 10.0g of MnO2 ( and a stoichiometric excess of sulfuric acid)
How much heat is required to raise the temperature of a mole of oxygen from 298 to 3000 K at constant pressure. The book gives the following values for Cp (specific heat at constant pressure): 29.376 J/(K*mol) at 298 K and 39.884 J/(K*mol) at 3000 ..
What is the molar concentration of cleaning solution formed where 8.8 L of ammonia gas at 33 degree c and 0.967atm, dissolve in water to give final volume 0.75 L.
What proportions of ethanol and water should be mixed in order to produce 100 cm3 of a mixture containing 50 percent by mass of ethanol.
List the following bonds in order of increasing ionic character. (The format H-O for the hydrogen-to-oxygen bond in H2O. Use the appropriate symbol to separate substances in the list.)
To what final volume should you dilute 60.0 mL of a 5.90M KI solution so that 20.0 mL of the diluted solution contains 3.30 grams of KI
calculate the molarity of a solution made by dissolving 0.850 grams of na2so4 in enough water to form exactly 930 ml of
One ecologically important equilibrium is that between carbonate and hydrogencarbonate (bicarbonate) ions in natural water. (a) Th e standard Gibbs energies of formation of CO3
The half-life of mercury-197 is 64.1 hours. A. If a patient undergoing a kidney scan is given 5.0 ng of mercury-197, how much will remain after 7 days? B. After 33 days
One of my pre-lab questions asks me to add one of two steps to the beginning of the mechanism for the reaction of benzopinacol with I2/HOAc to benzopinacolone to show the function of I2 in this rearrangment.
What is the boiling point of a solution that contains 6 moles of KBr in 1000 g of water? (K = 0.512 C/m)
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