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A particular reactant decomposes with a half-life of 145 s when its initial concentration is 0.389 M. The same reactant decomposes with a half-life of 219 s when its initial concentration is 0.258 M.
Determine the reaction order
Calculate the rate constant
Using a sample of CO 2 occupies a 2.54dm^3 container at STP. Determine the volume of the gas at a pressure of a temperature of 26.0 degree Celsius and 150.0 kPa?
Calculate the pH of Benzoic acid if 0.0458 M is dissolved in water ( Ka = 6.40 x 10^-5) C6H5CO2H + H2O = (H3O+) + C6H5CO2 ^-1
Calculate the Gibbs energy of the reaction (delta G rxn) at 25'C for the above rxn when all three gases are at 0.0010 atm. Kp = 1.8 x 10 ^ - 18
What is the alkali-aggregate reaction? List some of the rock types that are vulnerable to attack by alkaline solutions. Discuss the effect of aggregate size on the phenomenon.
HClO is a weak acid (Ka = 4.0 × 10-8) and so the salt NaClO acts as a weak base. What is the pH of a solution that is 0.087 M in NaClO?
A 2.9 m solution of methanol (CH3OH) in water has a density of 0.984 g/ml. What are the a) mass percent, b) molarity, and c) mole fraction of methanol in this solution?
When 3.8 L of propane gas is completely combusted to form water vapor and carbon dioxide at 350°C and 0.936 atm, what mass of water vapor results?
Standard Atmos. Pressure is 90.0 atm. What are the Partial Pressures of the Gases in mmHg?
Explain why triethylamine is a weaker base than dimethylamine or methylamine.
Calculate the mass of oxygen dissolved in a 5.00 L bucket of water exposed to a pressure of 1.13 atm of air. Assume the mole fraction of oxygen in air
A sample of 0.600 mol of a metal M reacts completely with excess fluorine to form 46.8 g of MF2. (a) How many moles of F are in the sample of MF2 that forms? M + F2 (b) How many grams of M are in this sample of MF2?
A rubber balloon was inflated with helium gas and floated in the air. The next day, the balloon was somewhat smaller and no longer floated.
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