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The aluminum in a package containing 75 ft2 of kitchen foil weighs approx. 12 oz. Aluminum has a density of 2.70g.cm3. What is the approx. thickness of the aluminum foil in millimeters? (1 oz = 28.4g)
Calculate the energy of a photon emitted an electron in a hydrogen atom undergoes a transition from n=3 to n=1
sodium carbonate na2co3 can be produced by heating sodium bicarbonate nahco3. a student heats 5.128 g sodium
125 mL of H_2O is initially at room temperature (22.0C). A chilled steel rod at 2.0C is placed in the water. If the final temperature of the system is 21.5C, what is the mass of the steel bar?
Which is the limiting reagent in the reaction between Copper sulfate pentahydrate and ammonia?
How much antifreeze would you add to a 2.0 gal water tank in order to obtain a solution that freezes
at a temperature of 520 degrees C, the equilibrium concentration of HI is 0.80 M, of H2 is 0.010 M, and of I2 is 0.010 M. What is the K for the reaction?
At noon on a clear day, sunlight reaches the earth\'s surface at Madison, Wisconsin, with an average power of approximately 2.00 kJ·s-1·m-2. If the sunlight consists of photons with an average wavelength of 510.0 nm, how many photons strike a 5.40..
Calculate the pH at the equivalence point for the titration of 0.25 M CH3COOH with 0.25 M NaOH. (For CH3COOH, Ka= 1.8 × 10^-5)
calculate the Al(III) concentration in the original unknown solution by correcting the dilution made when preparing the sample for analysis.Given: 10 mL unknown solution
Write equations for the mechanistic steps in the dehydration of cyclohexanol assuming an E1 mechanism.
How much heat is absorbed by nickel when 500.0 g nickel is warmed from 22.4 deg C to 58.4 deg C? [The specific heat of nickel is 0.444 J/(g.deg C.)]
A current of 0.0100 A is passed through a solution of rhodium sulfate, causing reduction of the metal ion to the metal. After 3.00 h, 0.038 g of Rh has been deposited. What is the charge on the rhodium ion, Rhn+? What is the formula for rhodium su..
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