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The thermal decomposition of dinitrogen pentoxide in the gas phase to give nitrogen dioxide and oxygen is a first order reaction. If the half life at 55 degrees celcius is 410 s, what is the value of the rate constant k?
The mass of an ice cube is 18.7 g, and its initial tempature is -14.4 degree C. The water resulting from the melted ice reaches the tempature of your skin,
Given the balanced reaction below for the oxidation of ethanol by potassium dichromate, calculate the number of liters of a 0.600 M K2Cr2O7 solution needed to generate 0.1665 moles of C2H4O2 from a solution containing excess ethanol and HCl.
Calculate the concentrations of species in solution and the pH when 0.1 moles of FeSO4 are placed in 1 L H2O at T=25 deg C. Consider hydrolysis and assume ideal solution. The pK of FeSO4 is 10^-2.65.
What is the maximum number of electrons in an atom whose highest-energy electrons have the principal quantum number n=5
An alkane with a molecular formula of C6H14 reacts with chlorine in the presence of light and heat. Two constitutionally isomeric monochlorides of molecular formula C6H13Cl are formed
Solid hydroxylapatite is dissolved in water to form a saturated solution. What is the concentration of Ca2 in this solution if [OH-] is somehow fixed at 4.90 × 10-6 M
0.102g of an unknown compoud dissoleved in 100. ml of water has an osmotic pressure of 28.1 mmHG at 20 degrees celcius. Calculate the molar mass of the compound.
a half-cell that consists of a copper wire in 1.00 m cuno3 solution is connected by a salt bridge to a half cell
A ground state H atom absorbs a photon of light that has a wavelength of 97.3 nm. It then gives off a photon that has a wavelength of 486 nm. What is the final state of the H atom. Please explain why you choose the values you do for N1 and N2 of t..
Propose stepwise sythesis of 2-cholor-4-nitrobenzoic acid starting from benzene
a solution of ammonia and water contains 3.30times1025 water molecules and 7.00times1024 ammonia molecules. how many
A 300.0-mL saturated solution of gold (II) phosphate, contains 0.31 grams of dissolved salt. a. Write an equilibrium expression for the solubility product constant.
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