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Scientists investigating acid rain measured the pH of a water sample from a lake and found it to be 4.8. The total concentration of dissolved carbonates in the lake is 0.0045 M. Find out the molar concentration of carbonate (CO3-2) in the lake if Ka1= 4.3x10-7and Ka2 = 5.6x10-11.
Balance the following redox reaction in acidic conditions by following the instructions described below: As2O3 (s) + NO3- (aq) > H3AsO4 (aq) + NO (g)1. Determine the oxidation state of each of the elements or compounds involved in the reaction
how many grams of oxygen are collected in a reaction where 222 ml of oxygen gas is collected over water at a
Often reactions of tertiary alcohols or tertiary alkyl halides result in elimination reactions and not substitution reactions
When ethyl benzoate is heated in methanol containing a small amount of HCl, methyl benzoate is formed. Draw structural formulas for the first two intermediates in this reaction. Indicate the order of formation of the intermediates by drawing a 'Rea..
Calculate the amount of energy in kilojoules needed to change 135 of water ice at -10 degrees Celsius to steam at 125 degrees Celsius.
In this experiment we determined the orders of reagents as well as a specific rate constant by measuring the rate of oxygen evolution from the iodide-catalyzed decomposition of hydrogen peroxide H2O2.
A student does a mini-titration with an unknown acid by adding 13 drops of 2M NaOH to 9 drops of the unknown solution. What is the concentration of the unknown acid
Magnesum metal will burn in carbon dioxide gas to produce carbon and magnesium oxide. What mass of magnesium will react with a 250.0 ml container of carbon dioxide gas at 77.0 degrees celsius and 65.0 kPa.
two spheres labeled a and b have identical masses but are made of different substances. the specific heat capacity of
The solubility product of PbBr2 is 8.9x10^-6. Determine the molar solubility in 0.20M Pb(NO3)2 solution
We did an experiment in class today heating a metal object over a bunsen burner, submerging it in water and recording the temperature to see what the heat flow was.
a 0.0188 g sample of a non-electrolyte isolated from throat lozenges was dissolved in enough water to make 10.0 ml of
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