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you are making a buffer. you add 57.89g of sodium methanoate to 500.0 ml of water. the molecular mass of sodium methanoate is 68.01 g/mol. the Ka of methanoic acid is 1.8*10^-4. find the pH of the buffer.
Vapor Pressure due to water at 24oC: 22.4 torr For the conditions listed above, calculate the volume of O2(g) produced at standard conditions of temperature and pressure.
Salicylic acid reacts with acetic anhydride at the phenol group rather than at the carboxylic acid group. Briefly explain why the phenol site is preferred over the carboxylic acid site.
A first order reaction has a rate constant of 0.251 at 17 degrees C. Given that the Arrhenius constant for the reaction is 8.18 x 10^11 sec^-1, calculate the value of the activation energy in KILOJOULES
Does ammonium chloride added to water produce a simple solution, does the ammounium chloride dissociate or does a chemical reaction occur resulting in a new set of compounds.
Calculate the minimum wavelength of light (in nm) that could break an oxygen-oxygen double bond given that it takes 499 kJ to break on mole of these bonds.
what are the possible sources of error when finding the density of a liquid and of a solid? what can be done to avoid these errors?
how do you find the empirical formula of a compound if they don't give you percentages. For example, if they ask: what is the empirical formula for N2O4?
A solution containing 80 g of KCl in 200 g of water at 50 0 C is cooled to 20 0C, a) How many grams of KCl remained in solution at 20 0C and b) How many grams of KCl crystallized out
What is the solubility of MnS, in grams per liter, in a buffer solution that is 0.115M HC2H3O2
The analysis showed 92% CO2, 2.2% NO, 1.7%SO2 and 4.1%H2O by mass. what is the partial pressure exerted by nitric oxide (NO)
Bombardment of boron-10 with a neutron produces a hydrogen-1 atom and another nuclide. What is this nuclide
God prices fluctuate, depending on the international situation. If gold currently sells for $503.11 per troy ounce, how much must you spend to purchase 1.00 mol gold
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