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The reaction AB-> A+b is second order in AB and has a rate constant of 0.0245 M^-1 S^-1 at 25.0 degree celcuis . A reaction vessel initially contains 250.0 mL of 0.108 M AB which is allowed to react to form the gaseous product. The product is collected over water at 25.0 degree celcius. How much time is required to produce 258.0 mL of the products at a barometric pressure of 736.8 mmHg. (The vapor pressure of water at this temperature is 23.8 mmHg.)
Calculate the wavelength in nanometers of the spectral line in the visible spectrum of hydrogen for which n1 = 2 and n2 = 3. What color is this line?
how much heat energy in calories is needed to raise the temperture 10.0g of water 6.0C
Compute the ΔH for this reaction and express your answer in kilojoules if the given . Bond Energies (kJ/mol) are N-Cl 201 , Cl-Cl 243 , N-H 389 ,H-Cl 431
A 6.50 x 10^-5 M solution of potassium permanganate has a percent transmittance of 27.3% when measured in a 1.15-cm cell at a wavelength of 525 nm.
Garlic smell is easily noticable due to the compound that is responsible for this is Allicin , when we analysed this compaound and find out molecular formula of molar mass= 486 grams
the pressure exerted on a 240 mL sample of hydrogen gas at a constant temperature is increased from .428 atm to .724 atm. What will the final volume of the sample be.
a solid block of exactly 100.0 cm cubed has a mass of 153.6g. Determine its density.Will the block sink or float on water.
Calculate the amount of heat liberated (in kJ) from 383 g of mercury when it cools from 61.0°C to 11.0°C.
What are the protons and neutrons that are emitted from a helium atom called? Atomic mass is expressed in atm.
How much time is required to produce 200g of alumimun metal for molten aluminum oxide dissolved in cryolite, if you use a 12.0 amp current.
Photosynthesis is estimated to produce 330.0 g (dry weight) of plant matter per square meter, 50% of which is carbon. Calculate the total number of grams of carbon "fixed" each year by 1000 square meters.
Molecular weight and mole concept explained in this solution, The molecular weight of NaOH is 40. the molecular weight of a widely used buffer, HEPES, is 255
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