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A 2.2g sample of a small protein having a molecular weight of 42,000 g/mol is dissolved in 45.6 mL of water at 23 degrees C. What is the osmotic pressure of the solution? (R=0.0821 (L atm)(K mol)
how many moles of carbon dioxide can be produced if one tablet containing 0.0119 mol sodium bicarbonate is dissolved
A certain sample of gas has a volume of 20.00 dm3 at 0°C and 1.000 atm. A plot of the experimental data of its volume against the Celsius temperature, ?, at constant p, gives a straight line of slope 0.0741 dm3 (°C)?1.
The solubility of benzaldehyde in dichloromethane is 5 g per 100mL. What mass of benzaldehyde can be recovered by extraction with 3x 50 mL portions of dichloromethane
A 1.6 g sample of a molecular compound is dissolved in 104 g of tetrachloromethane (carbon tetrachloride). The normal boiling point of the solution is 61.51degreesC, the normal boiling point of CCl4 is 61.2degreesC. The boiling point constant for ..
Write both an equations using Lewis Structures and a balanced chemical equations for the following reactions: Silicon atoms and Chlorine molecules Lithium atoms and Bromine molecules Ethylene molecules
Calculate the concentrations of all species in a 1.66 M Na2SO3 (sodium sulfite) solution. The ionization constants for sulfurous acid are Ka1=1.4x10^-2 and Ka2=6.3x10^-8.
A 28.7 g sample of ethylene glycol, a car radiator coolant, loses 652 J of heat. What was the initial temperature of ethylene glycol if the final temperature is 32.5°C (c of ethylene glycol = 2.42 J/gK)
what is the molarity of a 99.O mL ethanol solution containing 8.11g of ethanol (C2H5OH)
What amount of energy is required to completely ionize 29.9 grams of carbon atoms in the gas phase (C(g)) if the ionization energy of C(g) is 1086 kJ/mole.
why is sebacic chloride converted to sebacoyl chloride to make nylon polymer. What would the product be if hexanediamine reacted directly with sebacic acid
determine the structures of Compounds A, B, C, D, and E. Show calculations. Support all of your structure determinations. Student performed a sodium borohydride reduction experiment
A student is presented with a sample of an unknown substance and asked to classify the substance as organic or inorganic
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