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What if there was an inverse relationship between the temperature and the volume? How do you think the world might be different? How would this change our day-to-day lives?
Define that you are given 2500 atoms of the isotope 222RN. If 600 atoms of 222Rn remain after 7.87 days, explain what is the half-life of 222Rn? In radioactive decay the number of nuclei can be substituted can be substituted for concentration
how many grams of NaNO3 would you add to 250.0g of H2Oin order to prepare a solution that is 0.500 molal in NaNO3
Below is the 1H NMR spectrum of the following triazine structure. In the expansions of the spectrum, place the observed multiplicity in the bin above the resonance.
The first step of the fischer esterification involves protonation of the oxygen of the carboxylic acid by the acid catalyst:
The pKa of acetic acid is 4.76. Next, compute the pH of the same solution to which 3.5 ml of 6.05 M HCL has as well been added. Ignore the volume of the added HCL in your computation since its quantity is trivial. Utilize the Henderson-Hasselbalch..
You analyzed the C18 content of a sample of ground beef. You took 5 g of beef, homogenized into buffer and centrifuged. The volume of the supernatant was 14 ml.
Qualitative analysis revealed that an unknown contained the anions. NO3-, Cl- and ClO3-. A student weighed a sample into a beaker and recorded the following data
benzoic acid c7h6o2 burns in oxygen to form carbon dioxide and water. the dhcombustion of the reaction is measured to
The frequency of electromagnetic radiation required to promote an electron from n=2 to n=4 in a Bohr hydrogen atom is
What mass (in grams) of potassium acetate, KC2H3O2, must be added to 132 mL of 0.010 M acetic acid to form a buffer solution with a pH of 5.06?
Select the most important resonance structure for this species based on the formal charges on the atoms of the three resonance structures you have drawn. Now select the statement from the multiple choices which is true about this most important re..
A solution containing 3.47mM X (analyte) and 1.72 mM S (standard) gave peak areas of 3473 and 10222, respectively, in a chromatographic analysis. Then 1.00ml of 8.47mM S was added to 5.00ml of unknown X, and the mixture was diluted to 10.0ml. This..
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