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An X-ray photon of wavelength 0.978 nm strikes a surface. The emitted electron has a kinetic energy of 975 eV.
What is the binding energy of the electron in kJ/mol?
[KE = 1/2mv^2; 1 electron volt (eV) = 1.602 x 10^-19]
CO (5.00 g) and CO2 (5.00 g) were placed in a 750.0 mL container at 50.0 °C. Calculate the total pressure in the container.
The enthalpy change when a strong acid is neutralized by strong base is -56.1 kJ/mol. If 12.0 mL of 6.00 M HBr at 21.30°C is mixed with 300. mL of 0.250 M NaOH
How many possible isomers could exist for diacetylferrocene? Explain. Calculate the volume of 3M aqueous sodium hydroxide needed to neutralize the acetic and phosphoric acids in the synthesis of acetylferrocene?
For this system, calculate the change in entropy (ΔS), the change in internal energy (ΔU), and the change in enthalpy (ΔH) for a reversible adiabatic expansion of this gas to a final pressure of 1.10 atm. Also calculate the final temperature (T) a..
Solid soduim reacts violently with water producing heat hydrogen and sodium hydroxide. How many moeclues of hydrogen gas are formed when 48.7 g of sodium are added to water.
Van der Waals constants can be found here. P= ? atm Use the ideal gas equation to calculate the pressure under the same conditions. P= ? atm
how do you find the mass of one mole of spilt pea using the mass of .069 nd Avoadro's number (6.02x1023rd).
a 4.0 g sample of iron was heated from 0 degrees celsius to 20 degrees celsius. it absorbed 35.2 j of heat. what is the specific heat of this piece of iron?
She drinks a lot of water and has consume milk of magnesia(ph value 10.5) before she feels comfortable again. State the pH values of water and blood and whether its acidic or alkaline.
Perchloric acid with an aqueos solution of ammonia and nitrous acid with lithium hydroxide
Calculate the average speed of an oxygen gas molecule, O2, at 21.0 degrees Celsius. Express your answer numerically in meters per second.
Write a complete ionic equation and if there is a phase change you need to then write a net ionic equation and list the spectator ions sodium nitrate plus strontium chlorate equals sodium chlorate plus strontium nitrate
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