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The reactant concentration in a first-order reaction was 6.80×10-2 M after 10.0 s and 4.40×10-3 M after 65.0s. What is the rate constant for this reaction?
How much heat energy, in kilojoules, is required to convert 47.0 g of ice at -18.0 degrees C to water at 25.0 degrees C ?
The solubility of compound A in ethanol is 0.80g per 100.0mL at 0oC and 5.00g per 100.0mL at 78oC. What is the minimum amount of ethanol needed to recrystallize a 12.00g sample of compound A.
The final temperature of the water and the carbon is 59.02 C. Calculate the specific heat of carbon. The specific heat of water is 4.18 J/g C.
what volume of .2500M colbaat(III)sulfate is required to react completely with 5.00 grams of sodium carbonate?
Determine how much Nitrogen gas is consumed if 13.6 grams of FeN are formed in above reaction?
Calculate Enthalpy of HNCO given that the enthalpy of the following reaction is -221.4 KJ/mol.
For many years drinking water has been cooled in hot climates by evaporating it from the surfaces of canvas bags or porous clay pots. How many grams of water can be cooled from 39°C
When 49 mL of a solution containing 3.1 M AlCl3 is diluted to 53 mL, a dilute solution is formed. How many moles of Al3+ ions are contained in 14 mL of the dilute solution
What is the density of a block of marble that occupies 253 cm and has a mass of 752 g? Answer in units of g/cm
To resolve an object in an electron microscope, the wavelength of the electrons must be close to the diameter of the object. What kinetic energy must the electrons have in order to resolve a protein molecule that is 7.00 nm in diameter? Take the m..
Calculate the volume of ammonia required to bring the pH to 3.00 and to 8.00. Kb (NH3) = 1.8 x 10^-5.
CsCl crystallizes in a unit cell that contains the Cs+ ion at the center of a cube that has a Cl- at each corner. Each unit cell contains __________ Cs+ ions and __________ Cl-, ions, respectively.
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