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The flask shown here contains 10.0mL of HCl as well as a few drops of phenolphthalein indicator. The buret contains 0.170 M NaOH.Explain what volume of NaOH is needed to reach the end point of the titration?
Explain what was the initial concentration of HCl?
Write the schematic shorthand notation chemists use to represent electrochemical cells for a cell where the anode consists of solid copper immersed in a 0.0100-M solution of copper (II) nitrate and cathode consists of solid silver immersed
What should be the concentration of the NaCl solution (in g/L) so that it will have the same osmotic pressure as the blood at 37 deg C
a compound is found to contain 39.12 carbon 8.772 hydrogen and 52.11 oxygen by weight. what is the empirical
What is the pH of a 0.200M ammonium Percholate solution, NH4ClO4 The ionization constant of ammonia is 1.8x10^-5
When 2.00 mol of NOCl(g) was heated to 225 degrees celcius in a 400L steel reaction vessel, the NOCl partially decomposed according to the equation 2 NOCl(g) -->2 NO(g) + Cl2(g)
The decomposition of SO3 to SO2 and O2 , 24 Kcal/mole of heat is absorbed by the system.
In combustion studies of the use of H2 as an alternative fuel, HO is sometimes formed in flames by the reaction, H(g) + 1/2 O2(g) HO(g) Use the data below to calculate the value of Kc
Calculate the mole fraction of ethanol, C2H5OH, in a solution that contains 230. grams of C2H5OH and 312 grams of benzene, C6H6.
the mineral is pyroxene.1. recalculate the analysis into chemical formula.the formula should show the atoms of each
The ballon ascends to and altitude where the pressure is 504 mmHg and temperature is -34degree celcius . What is the volume of the ballon at this altitude
A 16 ounce specialty coffee drink contains 216 mg caffeine. If all the caffeine is extracted and dissolved in an equal amount of water, what is the pH of the solution. What is the percent ionization.
a 25ml sample taken from saturated solution of caoh2 required 36.0ml of 0.100m hcl to titrate. calculate the
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