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A sample of an unknown gas effuses in 12.2 min. An equal volume of H2 in the same apparatus at the same temperature and pressure effuses in 2.82 min. What is the molar mass of the unknown gas?
The presence of a carboxyl band near 1640 cm-1 and two bands near 3000 cm-1 is good evidence of an alcohol B) The presence of a sharp, medium intensity band near 2720 cm-1 and a strong carbonyl band near 1700 cm-1 is good evidence of an alcohol
explain why some molecules are best represendted by resonance structures and how these structures indicate the actual
Enzyme labeling can be used to map the structure of the active site of an enzyme using an affinity label, a molecule that is structurally similar to the substrate
For each pair of substances below, which one will have the higher molar entropy. Justify each choice with a brief explanation. Which substance has greater molar entropy. Why is its entropy greater
The overall formation constant for Cu(NH3)42+ is 1.1x1013 at 25oC. What is [Cu2+], in moles per litre, at equilibrium when 8.3 g Cu(NO3)2 is dissolved in 0.500 L of 1.00 mol/L NH3(aq)? Assume that there is no volume change when the Cu(NO3)2 is add..
For [Co(en)(NH3)2Cl2]ClO4 identify the coordination number of cobalt, the coordination geometry for cobalt, the oxidation number of cobalt, the number of unpaired electrons
pure liquid octane d 0.709 gml is used as the fuel in a test of a new automobile drive train. how much energy in kj is
By definition, which of the following can be broken down into simpler substances?
if you have 200.0 g of radioisotope with a half-life of 5 days. how much isotope would remain after 15
an ideal gas at temperature t0 is slowly com- pressed at constant pressure of 2 atm from a volume of 10 liters to a
Assuming 100% yield, calculate the final concentrations of reactants and products. Calculate the pH of the final solution
Tripeptide Protein: Acidic, Basic, or Neutral? Alanine has an R-group structure of CH3, cysteine has an R-group structure of HS-CH2, and aspartic acid has an R-group structure of HOOC-CH2
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