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Iodine-131 is a radioactive isotope. After 9.00 days, 46.0% of a sample of 131I remains. What is the half-life of 131I
A 643 mL gas sample at STP is compressed to a volume of 187 mL, and the temperature is increased to 33?C. What is the new pressure of the gas in Pa? Answer in units of Pa.
Find the normal boiling point of a saturated solution of LiF at 100C, assuming it undergoes complete dissociation. The solubility of LiF is 230 mg/100 g of water at 100C
Important information about Organic Chemistry, The most reasonable formula for a compound demonstrating M+ =101 with a minor M+1 peak is
How is the rate of consumption of O2 related to the rate of consumption of NH3? (b) How is the rate of formation of NO related to the rate of consumption of NH3? (c) How is the rate of formation of H2O related to the rate of consumption of NH3?
Identify the spectator ions present when the following are mixed. Include aggregation states. If there are no spectator ions, say none.
The exothermic chemical reaction CO(g) + H2O(g) CO2(g) + H2(g) has Kc = 0.034 at 25°C. We currently have a flask containing all the components listed in this equation at equilibrium at 25°C. Subsequently, we will either (1) add some H2 to the flas..
A sample of gas is made entirely of carbon dioxide and water, and there are 259 moles of carbon dioxide and 513 moles of water. If the total pressure of the sample is 21 atm, what is the partial pressure of each gas?
What is the theoretical yield of chromium that can be produced by the reaction of 40.0 g of Cr2O3 with 8.00 g of aluminum according to the following equation?
What is the molarity of the Na 2 S 2 O 3 solution if a 0.150 g sample of KIO 3 required 10.7 mL of Na 2 S 2 O 3 solution for its standardization?
How many milliliters of 0.110 are needed to react completely with 25.0 of 0.160 ? How many grams of will be formed?
How would the presence of a double or triple bond help to determine the geometric shape of a molecule?
Acetylene, C2H2, can be converted to ethane, C2H6, by a processknown as hydrogenation. The reaction is
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