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a photon has a wavelength of 741nm calculate the energy of the photon in joules
What is the initial concentration of the Fe2+(aq) solution?
has freezing point depressiom constant of 42.8 C/molal .if you mix 29.67 grams of camphor with 4.28 grams of triose (C18 H32 O11), wht will be the new melting point of the mixture
what is the relationship between the dipole moment and the bond moment? how is it possible for a molecule to have bond
Determine how much oxygen in grams is formed by the complete reaction of 38.88 of Na2O2.
A student is examining a bacterium under the microscope. The E. coli bacterial cell has a mass of m = 0.700fg (where a femtogram, fg, is 10?15g) and is swimming at a velocity of v = 2.00?m/s , with an uncertainty in the velocity of 8.00 %
Distilled water is mixed in one test tube with 1) a soap made of NaOH and canola oil and 2) a separate test tube with just laundry detergent
A .500M solution of a weak acid, HX, is only partially ionized. The [H+] was found to be 3.69x10^-3M. Find the dissociation constant for this acid.
Describe how the pseudo rate constant, k', is determined from the experimental data? Also describe how k, the true rate constant, is determined from the experimental data
Consider a solution that is 0.01M formic acid and 0.2M hydrochloric acid. Determine the pH of this solution.
When 1.150 grams of an unknown nonelectrolyte dissolves in 10.0 grams of water, the solution freezes at -2.16°C. What is the molecular weight of the unknown compound? Kf for water = 1.86°C/m.
A gas expands and does P-V work on the surroundings equal to 325 J. At the same time, it absorbs 127 J of heat from the surroundings. Calculate the change in energy of the gas.
If 97.3 L of NO2 forms, measured at 35 C and 632 mm Hg, what is the percent yield?
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