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Zinc sulfide reacts with nitric acid to give zinc sulfate and nitric oxide calculate the mass of zinc required to react with 110mL of 0.15M nitric acid
Draw and label the Crystal Field splitting diagram for the 3d atomic orbitals in an octahedral field
what volume of oxygen gas will be collected if a 5gram sample of potassium permanganate decomposers at 25 degrees celcius and 1 atmospheric pressure?
Draw a possible Lewis structure for a IF7 molecule. List two possible names for this shape. What hybridized orbitals are used by the central iodine atom in this molecule
A solution of salicylate dianion is prepared by mixing 0.158 g of reagent grade acetylsalicylic acid in 5 mL of 1 M sodium hydroxide and heating the mixture until all of the solid dissolves.
What is the pH of a buffer that consists of 0.20 M NaH2PO4 and 0.40 M Na2HPO4? Ka = 6.2 × 10-8
150.g of NaCl completely dissolves (producing Na+ and Cl- ions) in 1.00k of water at 25.0C. The vapor pressure of pure water at this temperature is 23.9torr.
A single strand of natural silk may be as long as 4.03 x 10^3 m. Convert this length into miles.
If the system is allowed to expand as N2 is added at a cosntant total pressure of 1 bar, what will be the equilibrium degree of dissociation when the N2 partial pressure is 0.6 bar
Explain how a calibration curve could be used to determine an unknown quantity
Benzoyl peroxide, the substance most widely used against acne, has a half-life of 9.8 103 days when refrigerated. How long will it take to lose 7% of it potency (93% remaining)
A quantity of 6.0 moles of an ideal gas is reversibly heated at constant volume from 17 C to 35 C. Calculate the entropy change.
The gas-phase reaction Cl(g)+HBr(g) => HCl(g)+Br(g) has an overall enthalpy change of -66kJ. The activation energy for the reaction is 7kJ. What is the activation energy for the reverse reaction?
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