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Explain the boiling point of benzene is 81 degrees Celsius. Define what is the vapor pressure at the temperature?
How many grams of KOH are required to neutralized 300ml of 5.0 N HN03 solution.
What is the concentration of OH (in M) initially present in a 12 M NH solution? Hint: The K of NH is 1.8x10. Express your answer to two significant figures.
a balloon is filled to a volume of 7.00 times 102 ml at a temperature of 20.0 degrees celcius. the balloon is then
A buffer solution contains 0.15 mol of propionic acid (C2H5COOH) and 0.28 mol of sodium propionate (C2H5COONa) in 1.50 L. 1.) What is the pH of this buffer?
What is the role of vacuum filtration in this process of Recrystallization. How do you do it
Crystalline silicon has a cubic structure. The unit cell edge length is 543 pm. The density of the solid is 2.33 g/cm3. Calculate the number of Si atoms in one unit cell.
A 275mL sample of O2 is collected over water at 60 degrees C the total pressure 755 torr what is the volume of O2 at STP?
What is the pressure (in millimeters of mercury) inside a container of a gas connected to an open-end manometer filled with decane (density = 0.7300 g/cm3) when the level in the arm connected to the container is 765.3 mm in height higher than the ..
Write a balanced equation for the neutralization of potassium hydrogen phthalate (C8H5O4K) with sodium hydroxide. Calculate the mass of potassium hydrogen phthalate that neutralizes 15 mL of an ~0.040 M NaOH solution.
The formula for rust can be represented by Fe2O3. How many moles of Fe are present in 10.0 g of the compound
Calculate DG for a voltaic cell with E= +0.24V if the overall reaction involves a 3 electron reduction.
The energy required to dissociate the H2 molecule to H atoms is 432 KJ/mol H2. If the dissociation of an H2 molecule were accomplished by the absorption of a single photon whose energy was exactly the quantity required , that would be its wavelend..
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