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A 0.22 g sample of a large biomolecule was dissolved in 30.0 mL of solution. The osmotic pressure of this solution was 32 mm Hg at 27 degrees celsius. What is the molar mass of the biomolecule?
calcualte the precentage error that would result from the use of the ideal gas equation of state for the calculation.
Calculate the vapor pressure of water above a solution prepared by dissolving 26.9 g of glycerin (C3H8O3) in 183 g of water at 343 K. Vapor Pressure (torr) at 343 (or 70) is 233.7 torr
A 100.0 mL sample of 0.18 M HClO4 is titrated with 0.27 M LiOH. Determine the pH of the solution before the addition of any LiOH.
A sample of ammonia gas occupies 20.0 mL at 585 torr and 20 degrees Celcius. If the volume of the gas is 50.0 mL at 50 degrees Celcius, what is the pressure
The rate constant at 25oC is 3.7×10^9 mol^-1 L s^-1. In an experiment, 0.500 L of 0.020 mol L ^-1 NaOH(aq) is rapidly mixed with an equal volume of 0.020 mol L^-1 HCN(aq). Calculate the time, in seconds, required for this [OH] to decrease to 1.0×1..
The molecular formula of glycine (an amino acid) is NH2CH2COOH, the molecular mass is 75.07grams/mole. If 10 glycines are joined together by a dehydration reaction to make a polypeptide, what would the molecular mass of the polypeptide equal.
considering the given equation 4fes 3o2g 2fe2o3s compute the amount of heat evolved in the oxidation of 32.0
At 25 °C, water has an equilibrium vapor pressure of 23.8 mm Hg. If 2.500 g of water is sealed in an evacuated 10.0-L flask and heated to 25 °C, what mass of water will evaporate?
Decide if the compound/ion listed can satisfy the octet rule (duet rule for H), if so choose Satisfies Octet Rule from the drop down menu. If the compound/ion cannot satisfy the octet rule for one of the atoms in the formula, choose one of the fol..
what is the resulting pH when mixing 200.0mL solution of 0.50 N HCl (strong acid) with 300.0mL solution of 0.45 M KOH (string base)
What is the theoretical amount of oxygen required for the fuel mixture. What amount of air is added to the fuel mixture. How many moles of methane are present in the product gas
Ascorbic Acid (Vitamin C) contains C, H, and O. In one combustion analysis, 5.24 g ... analysis, 5.24 g of ascorbic acid yields 7.86 g CO2 and 2.14 g H2O. Calculate the empirical formula and molecular formula of ascorbic acid given ... [PDF] 112
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