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If the frequency of light emitted by potassium is 3.95 x1014 Hz, what is the corresponding wavelength associated with this frequency in nanometers?
Calculate the molalities of the following aqueous solutions. (a) 2.26 M sugar (C12H22O11) solution (density of solution = 1.12 g/mL) m (b) 0.93 M NaOH solution (density of solution = 1.04 g/mL) m (c) 5.64 M NaHCO3 solution (density of solution = 1..
If iron is oxidized to Fe2+ by a copper(II) sulfate solution, and 0.538 grams of iron and 13.0 mL of 0.40M copper(II) sulfate react to form as much product as possible.
Which of the compounds contain chiral centers a. 1-bromobutane b. 2-bromobutane c. 1,2-dibromobutane d. 1,3-dibromobutane e. 1,4-dibromobutane f. 2,3-dibromobutane
nickel ion forms the complex ion hexaamminenickel (II) with a formation constant of(Kf) of 5.6 x 10 ^8. initially the complex is formed when .002 M nickel sulfate is added to .10 M ammonia.
Calculate the pH or the hydrogen ion concentration as required for each of the following substances: 0.075M acetic acid
Heat energy is added to a 352 g block of nickel, and the temperature increases from 21 degrees C to 53 degrees C. If the same amount of heat was added to the same mass of water at the same temperature, what would the water's final temperature be
0.5000 g of carbon, hydrogen, oxygen compound is burned. If 0.7329g of CO2 and .3000g of H2O are produced, What is the empirical formula of the compound
what does it mean by carbocation of a molecule is expected torearrange or not expected to rearrange ? would you show
A buffer containing 0.25 M NH3 (Kb = 1.8 x 10-5) and 0.40 M NH4Cl is prepared. a. What is the pH of this buffer solution. b. What is the pH of the solution after 25.00 mL of 1.00 M HCl is added to 975.0 mL of buffer
Assumine the rate law for the system is rate= k(I-)^x(S208)^y, what are the values of x and y for the system
Calculate Equilibrium constant, if delta Gf for NH3(aq) is -26.50 kj/mole; for H2O(l) is 237.13 kj/mole;for NH4+(aq) is -79.31 kj/mol; for OH-(aq) is 157.3 kj/mole. How many moles of NH4Cl must be added to 1.0L of 0.10M NH3 to make a buffer whose ..
Common Ion Effect: The Ksp of silver iodide is 8.3 x 10^-17. What is the iodide ion concentration of a 1 L saturated solution of AgI to which .2 mole of AgNO3 is added
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