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Compute the threshold frequency (Hz) of a metal if that metal emits an electron with a velocity of 3.28 × 105 m/s when illuminate with light that has a wavelength of 260 nm.
When a dilute solution of a weak base (Ka- 3.5*10^-9) is titrated with a 0.100 M solution of HCl at 25 C, the equilibrium constant for the titration reaction has this value:
What is the rate of the following reaction (M/s) if the rate constant for the reaction is 1.08E-3 L•mol-1•s-1 and the concentration of each reactant is 0.0428 M.
Draw the Lewis structure of formic acid, HCO2H. (Hint: C is the central atom. One of the H is bonded to an O.) How do we know which of the possible structures for HCO2H is more likely to be correct?
The oxygen sample burned in sodium to form sodium oxide, Na2O - write a balanced equation for the reaction.
How many atoms of neon occupy a volume of 14.3 L at STP?
What volume of 0.200M Hydrochloric acid must combined to 250mL of 0.300M C8H7NaO3 to produce a buffer of solution with a pH of 3.37?
Diamond and graphite are two crystalline forms of carbon At 1 atm and 25°C, diamond changes to graphite so slowly that the enthalpy change of the process must be obtained indirectly. Determine deltaH(rxn) for
A water solution of sodium hypochlorite (NaClO) has a concentration of 0.61m. Express this concentration as a mole fraction.
what is the largest alkane number of carbons that can be named not exceeding decane as a parent? where is the primary
the ionization of water must be considered in order to calculate the pH of this acidic solution.)
If the temperature of the red-hot sword was initially 944.0oC and the temperature of the water (heat capacity 4.184J/g*K) was 23oC, compute the final temperature of the water once the blade has fully cooled. Presume no water vaporizes upon contact..
Draw the major and minor resonance structure for the carbonate ion (CO3^-2). Include any formal charges, Indicate which are the major resonance structures and why.
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