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Inspect the table of polyatomic ions and determine what happens to the charge on the polyatomic ion, phosphate when an H+ is added to the formula? What is the new name?
Determine the mass of 100 mL of solution for this reaction: the results were 2.05 g of NaOH, 102.05 grams (total solution-when added with the water).
a balloon contains 0.140 g of helium at a pressure of 1.00 atm. at what temperature will the balloon have a diameter of
Draw the structure of the peptide WRCFQ. Show the ionization state that would be the major form at pH 7. (Note: this question addresses your knowledge of the one or three letter codes for amino acids,
Calculate the apparent molecular weight of the unknown hydrocarbon on the basis of the freezing-point depression experiment.
What potential issues might arise if the pH of your buffer is too close to the pI of your protein of interest? Why might an extreme buffer pH ( 9) be unsuitable?
what is meant by hydrogenation? please answer in a simple and easy to
Octane (C8H18(l)) is a key component of gasoline. How much energy (enthalpy) in kJ is released from the combustion of one mole of octane? How much energy is released from the combustion of one gram of octane?
The amount of nitrogen in an organic substance can be determined by an analytical method, called the Kjeldahl method, in which all the nitrogen in the organic substance is converted to ammoinia.
of an apparatus that could be used to electroplate a ton spoon with Ag. Label the anode and cathode, suggest an electrolyte, and write the anode and cathode half reactions. explain how the process takes place.
If 14.0 mL of a 0.742 M solution of barium hydroxide is mixed with 25.9 mL of a 0.724 M solution of phosphoric acid, and 1.98 g of solid barium phosphate is collected once the reaction is complete, what is the percent yield of the reaction
A student went out of the lab to talk on the phone and returned to find that their partner had neglected to monitor the ice bath used to chill their diazonium ion solution
The general rate law is: rate=k[A]^2. How long is the third half-life of the reaction if [A]0 is 0.080M and the first half life is 22 min
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