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At 23.6 degrees Celsius, 0.500 L of a solution containing 0.302grams of an antibiotic has an osmotic pressure of 8.34 mmHg. Explain what is its molecular mass?
Draw the structure of the one alkene which upon treatment with O2 followed by Zn and acid, would give rise to formaldehyde and cyclohexanone
Because Ions are more strongly attracted in an ionic compound than molecules are attracted in molecular compounds
A state of dynamic equilibrium, Ag2CO3(s) 2Ag^+(aq) + CO3^2-, exists in solution. After water is added to the system and equilibrium is reestablished: what change in the number of moles of AG^+ (aq) occurs in the system? Explain.
Calculate the of the following solutions and report it to the correct number of significant figures: Seawater with H3O = 7.0×10?9
How many moles of H+ ions are present in the following aqueous solutions? (a) 1.1 L of 0.48 M hydrobromic acid (b) 47 mL of 2.4 M hydroiodic acid (c) 477 mL of 0.27 M nitric acid
the total elute from the column was diluted to 250 mL and a 50 mL aliquot was titrated with 11.35 mL of 0.10359 M sodium hydroxide. Calculate the percentage of ammonium ion in the sample.
Draw four structures corresponding to dihedral angles of 0, 60, 120 and 180 degrees. Clearly indicate the best and worst in this set.
A 24.7 mL, 1.66 M KMnO4 solution is combined with 16.7 mL of 0.721 M KMnO4 solution. Compute the concentration of the final solution.
A 25.0g sample of nitrogen (N2) has a volume of 50.0L and a pressure of 630.0 mmHg. What is the temperature of the gas.
Why should a distilling flask be filled to not more than two-thirds of its capacity at the beginning of a distillation procedure?
hawaiian macadamia nuts provide about 190 cal of energy usable from the digestion of these nuts per 1.0 oz serving. if
Assume that 29.0 mL of a 0.10 M solution of a weak base B that accepts one proton is titrated with a 0.10 M solution of the monoprotic strong acid HX.
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