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Consider the following setup. A (thick) rubber band hanging from the ceiling supports a weight (w). A hair dryer is brought close to the rubber band, turned on and it hits the rubber band with hot air. Describe what will happen to the length of the rubber band when the hair dryer is turned on, and explain the observed behavior.
Car batteries are filled with sulfuric acid. What is the mass of the acid (in grams) in 500.0 mL of the battery acid solution if the density of the solution is 1.285 g/cm^3 and if the solution is 38.1% sulfuric acid by mass.
What is the major organic product formed when methylmagnesium bromide, a strong nucleophile, is treated with benzaldehyde, followed by protonation with acid
What is the pH of a solution containing 0.24 moles of ammonia and 17.8g of ammonium chloride, NH4Cl. Kb for ammonia is 1.8 times 10, What is the PH of a 0.085M solution of ammoniun chloride. Kb for ammonia is 1.8 times 10
Predict the wavelength (in nm) of the lowest energy electronic transition in the dye polymethine ion. Assume all C-C and C-N bond lengths are the same and are 1.4 A (0.14 nm) and that N+1 contributes 1 π-electron and N contributes 2 π-electrons.
A gas mixture containing oxygen, nitrogen and neon exerts a total pressure of 1.20 atm. If helium added to the mixture increases the pressure to 1.50 atm, what is the partial pressure (atm) of helium
Propose a reasonable reaction for the sodium hypochlorite oxidation of 3-hetpanol. Give the IUPAC name of expected product. What other oxidizing agents may be used to carry out oxidation
A microwave oven operates at 2.50GHz. What is the wavelength of the radiation
A 25.0 mL sample of a solution of the weak base aniline, C6H5NH2, requires 25.67 mL of 0.175 M HCl to reach the equivalence point. (Kb for aniline = 4.0 x 10-10)
What volume of 1.40M NaOH solution must you add in order to prepare an acetate buffer of pH = 4.83? (The pKa of acetic acid is 4.76).
How much 10.0 M HNO3 must be added to 1.00L of a buffer that is 0.001 M acetic acid and 0.1 M sodium acetate to reduce the pH 5.45?
Calculate the boiling point of a solution prepared by dissolving 70.0 g of naphthalene, C10H8 (a nonvolatile nonelectrolyte), in 220.0 g of benzene, C6H6. The Kb for benzene = 2.53°C/m. The boiling point of pure benzene is 80.1°C.
how did rutherford interpret the observation that only a very few of the a particles were scattered by the gold foil
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