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The pH of .01 M H3PO4(aq) is 2.2. Estimate the concentration of PO4^-3 in the solution. For H3PO4, the values of Ka1, Ka2, and Ka3 are 7.6E-3, 6.2E-8, and 2.1E-13 respectively.
1) 7.6E-3 M2) 5.8E-3 M3) 2.1E-13 M4) 2.3E-18 M5) 6.2E-8 M
A 4.369 g sample of metal is placed in a flask. Water is added to the flask and the total volume in the flask is read to be 126.4 ml. The mass of the water
for each of the following three questions 25.0 ml of 0.100 mpyridine kb 1.70 x 10-9 istitrated with 0.100 m hcl. for
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Explain what happens to the atomic number of a nucleus when positron emission occurs
The atomic absorption signals were A=0.22 for the unspiked sample and 0.37 for the sample spiked with the additional gold standard. Assuming that the signal is linear over the measured absorptions, what is the concentration of gold in the original..
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Explain how it is that the concentrations of chloride ions in these beakers are different even though the concentrations of each substance(compound) are the same.
While a 5.00-g sample of KCl is dissolved in water in a calorimeter that has a total heat capacity of 2.403 kJ•K-1, the temperature decreases by 0.480 K. Compute the molar heat of solution of KCl.
In a steam distillation of a 1:1 naphthalene, salcyclic acid mixture with 40mL of water which compound would distill out as well as which would stay behind? Keep in mind that salicyclic acid is water soluble and naphthalene is not.
Consider a reaction in which two reactants make one product (for example, consider the unbalanced reaction A + B ? C) You know the following:
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