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If a photon has a wavelength of 412.2 nm, what is its energy in J, frequency in s^-1, wavenumber in cm-1, and linear momentum in kg m/s
A noble gas with a mass of 13.1 g occupies a 2.5 L container at a pressure of 3.2 atm at 298 K. What is the identity of the noble gas
Determine How many mg of a 298 mg sample remains unreacted after twenty three days if 32P decompose by a first-order mechanism, half-life = 14.3 days.
Four wavelengths of light are each quantized to excite electrons of a given atom to a particular higher energy shell. Assign wavelengths of 496nm, 356nm, 701nm, and 591nm
The neutralization of 50.0 mL of 1.00 M hydrochloric acid with 50.0 mL of 1.00 M sodium hydroxide causes a 6.7°C increase in temperature. Predict how the following changes to the experimental protocol would affect the value of the change in temper..
A sample consisting of a 2.5 mol of a perfect gas at 220 K and 202.6 kPa is compressed reversibly and adiabatically unitil the temperature reaches 225 K.
when a 1421 J of heat energy is added to 39.5 g of hexane, C6H14, the temperature increases by 15.9 degree centegrade. Calculate the molar heat capacity
Discuss how to find the molar mass of a compound, percent composition of the elements of a compound and how to determine the empirical and molecular formulas from percent composition.
A buffer is made up of 355 mL each of 0.200 M NaHCO3 , and 0.134 M Na2CO3 . Assuming that volumes are additive, calculate
what is the change in enthalpy for 2.854 moles of the liquid?
Consider the following data: expect a BeF2 molecule to be linear but an SF2 molecule to be angular. Explain the decreasing melting point from NaF to Nai.
If in a decompositionreaction, one sample of magnesium fluoride produced 1.66kg of magnesium and 2.58kg of fluorine. A second sample produced 1.27kg of magnesium.How much fluorine (in grams) did the second sample produce
Aerosol cans carry clear warnings against incineration because of the high pressures that can develop upon heating. Suppose a can contains a residual amount of gas at a pressure of 755mm Hg and a temperature of 25 C
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