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1) Which gives a better measure of the pH: the universal pH paper or a pH meter? 2) Can distilled water be an effective buffer
The reaction A->B follows first-order kinetics with a half-life of 21.7 hours. If the concentration of A is 0.023 M after 48 hours, what is the initial concentration of A?
starting with any alkane, alkene, or alkyne as your only organic reactant, propose a series of chemical reactions that will yield
What is the Henry's law constant for the gas if the partial pressure of the gas in air is .0088 atm?
When looking at an energy diagram, how do you determine what the rate-limiting step is? How do you determine what the energy of activation is for the rate determining step
An excess of NaOH is treated with 1.1L of dry HCl gas (measured at STP). What is the weight of NaCl formed?
What determines whether two substances are likely to be miscible with each other, in terms of thermodynamic and intermolecular forces
A 250.0 ml sample of gaseous hydrogen bromide, measured at 22.9 C and 0.930 atm, was dissolved in sufficient pure water to form 250.0 ml of solution. What was the pH of that solution.
Draw the abbreviated structural formula of the products of the complete hydrolysis of lidocain.
Draw structural formulas (full or condensed) and give the molecular formulas for the following compounds. a)2-methylpropane b)2,4-dimethylpentane c)2,2-dimethylpentane
Which of the following compounds have a meso form? 1, 3-dichloropentane 2, 3,-dichloropentane 2, 4-dichloropentane 1, 5-dichloropentane
A 739 mL gas sample at STP is compressed to a volume of 244 mL, and the temperature is increased to 24 ?C. What is the new pressure of the gas in Pa?
for 1st order problem, at 298k the rate is 3.8X10^-6M/s, and at 350k the rate is 4.2X10^-5 M/s. What is the half life at 360k?
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