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If the solutions you are examine by colorimetry are blue which of the subsequent wavelengths of light would be the better choice for your experiment?
440 nm (blue light)
650 nm (orange light)
A spoonful of sodium chloride is dissolved in a liter of water. What is sodium chloride in this solution?
Use the wattage of the lightbulb and the time it is on to calculate the change in energy in joules. (assume that the cylinder and lightbulb assembly is the system and assume two significant figures).
An equilibrium mixture contains {\rm{N}}_2 {\rm{O}}_4, (P = 0.27 atm) and {\rm{NO}}_2 (P = 1.2 atm) at 350 {\rm K}. The volume of the container is doubled at constant temperature.
Calculate the pH for each of the following cases in the titration of 50.0 mL of 0.100 M HCLO with 0.100 M KOH. The ionization constant for HCIO is 4.0 x 10^-8 a) after addition of 50.0 ml of KOH
What percentage of the Sr-90 that was formed in the detonation of the first fission bombs in August 1945 is still present in the environment in August 2032?
Its normal boiling point is 111.0oC and its molar heat of vaporization is 35.9 kJ/mol. What would be the vapor pressure (in torr) of toluene at 75.00oC?
TItanium(6.94x10-190 and silicon (7.77x10-19 J) surfaces are irradiated with UV radiation with a wavelength of 199 nm. What is the wavelength of the electrons emitted by the titanium surface
the initial rates listed in the table were determined for thethermal decomposition of azomethane ch3nnch3ch3nnch3 g
Which of the following is not an application of colligative properties? A) reducing boiling points of pure liquids at increased altitude B) adding silver to mercury to lower the vapor pressure of mercury C) melting snow by application of salt D) d..
If the volume of the cylinder is 5500 mL and the pressure of the N2 in it is 2.5 atm. (temperature is 25oC) a. How many moles of nitrogen molecules are in the cylinder
What is the enthalpy of formation of CO(g) in kJ. 2CO(g) + O2(g) --> 2CO2(g). ?H reaction = -566 kJ ; ?H CO2(g) =-393.5 kJ/mol.
Temperature is increased from 0 degrees to 823 degrees celsius. They are asking for the work of expansion of the gas in joules
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