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Aluminum is a lightweight metal (density=2.70 g/cm^3) used in aircraft construction, beverage cans, and foils. a) What is its density in kg/m^3? b) How many pounds would an aluminum clock measuring 1.0 m x 2.0 m x 1.5 m weigh?
calculate the number of NaCl formula units formed when 176 Na atoms and 98 Cl2 molecules react?
What are the concentrations of all species and the pH of a buffer solution that is 0.30M NH3 and 0.3 0M NH4Br? For NH3 Kb = 1.8 X 10-5.
N-Phenylmaleimide, can act as a dienophile in the Diels-Alder reaction Draw the structure of the product that would be formed by the treatment of N-phenylmaleimide with
Menthol is a crystalline substance with a peppermint taste and odor. When 0.705 g of menthol is dissolved in 25.0 g of cyclohexane, the freezing point of the solution is lowered by 3.76 °C.
Calculate the average molar bond enthalpy of the carbon-chlorine
For the following reaction, label the acid, base, conjugate acid, and conjugate base. Given the following values for Ka, circle the stronger acid and stronger base and predict whether the equilibrium is toward the reactants or products.
What mass (in g) of iron is needed to evolve 730.5 kJ of heat under standard conditions as it forms iron(III) oxide
Calculate the number of moles of hydrogen gas that can be produced by the reaction of excess water with 8.75 x 1021 atoms of barium.
Enough of a monoprotic acid is dissolved in water to produce a 0.0104 M solution. The pH of the resulting solution is 2.46.
You need 70.2J to raise the temperature of 34.0 g of ammonia, NH3 (g), from 23.0C to 24.0C. Calculate the specific heat of ammonia.
Find the appropriate equilibrium constant (Kp) for the reaction below under the following conditions. 1/2 SNO2(s) + H2(g) H2O(g) + 1/2 Sn(s)
Methanol is toxic for humans if they ingest liquid methanol or inhale methanol vapor in significant quantities. When inhaled in concentration greater than 1000 ppm, death has been reported.
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