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1. What is the wavelength of light (in nm) if the frequency is 4.2 x 10^14 (1/sec)?
2. What is the wavelength of light (in nm) if the energy of the wave is 2.54 x 10^-19 J?
3. What is the final concentration of a solution if 157-mL of a 3.4-M solution was diluted to 310-mL?
4. What is the final concentration of a solution if 15-mL of a 1.5-M solution was diluted to 100-mL and this process was repeated two more times?
If 50 mL of .100 M NaOH is titrated with .100 M HCl, what is the pH of the solution after 30 ml of HCl solution has been added
calculate the mass in kilograms of 3.99 liters of acetic acid. the density of this substance is 1.05g/mL ?
the age of any remains from a once-living organism can be determined by radiocarbon dating a procedure that works by
if the rate constant for this reaction was determined to be 5.0 x 10-3 m-1s-1 at 220c and 7.5 x 10-3 m-1s-1 at 350c
While doing sn2 chemistry- synthesis of 1-bromobutane from butan-1-ol, why would the crude product likely contain organic impurities
a weather report gives a current atmospheric pressure reading of 546.5 mm hg. express this reading in
In a reaction that is first-order with respect to reactant A and second-order with respect to reactant B, what will happen to the rate of the reaction if we
Potassium manganate is a dark green, crystalline substance whose composition is 39.6% K, 27.9% Mn, and 32.5% O, by mass. What is its empirical formula. The molecular mass of potassium manganate is 197.13, what is the molecular formula
Express the concentration of a 0.0480 M aqueous solution of fluoride, F-, in mass percentage and in parts per million. Assume the density of the solution is 1.00 g/mL.
A solution containing 16.9 g of nonvolatile molecular compound in 250. g of water has a freezing point of -0.744°C. What is the molar mass of the substance?
a voltaic cell is constructed with a agag half-cell and a cdcd2 half-cell. the silver electrode is positive. write
The heat of vaporization of water is 44.0 {rm kJ/mol}. Calculate the quantity of energy released when enough water vapor condenses to form 0.42 inches of rain over an area of one square mile.
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