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Exactly 375.0 mg of an unknown protein is dissolved in enough water to give 50.00 mL of solution, and the osmotic pressure was determined as 3.25 mmHg at 298 K. Estimate the molar mass of this protein.
A. 42,900 g/mol B. 3,600 g/mol C. 56,400 g/mol D. 139,000 g/mol
A solid substance has a density of 8.7g/cm^3. How many pounds will this substance weigh if you have a block of the substance with a volume of 215.0 cubic feet
the pka of the carboxyl group on the acetyl salicyclic acid is 3.0 . You have 500 liters of 0.1 M acetylsalicyclic acid. How much solid sodium hydroxide has to be added to convert all of the acetylsalicyclic acid into sodium acetylsalicylate but n..
A 2.00L flask originally containing 0.500M disulfur decaflouride is allowed to reach equilibrium and found to contain 0.023M disulfur decaflouride. If an additional 0.125mol of the disulfur decaflouride is added and equilibrium re-established, wha..
According to the following reaction, how much energy is evolved when 56.0 kg of Fe3O4 is formed? Reference the molar mass of Fe3O4 is 231.55 g/mol
Write a balanced equations and include the phase of the compound (aq or s) , then write a complete ionicequation and if there is a phase change you need to then write a net ionic equation and list the spectator ions.
how much heat is required to convert 27.0 g of ethanol at 23 c to the vapor phase at 78 c in kj? ethanol c2h5oh boils
Calculate the feed rate of humid air in SCMH?Vapor pressures of water at 32 °C and 4 °C are 35.7 mm Hg and 6.1 mm Hg respectively.
A vineyard has 145 acres of grapes. A soil supplement requires 5.50 grams for every square meter of vineyard. Explain how many kilograms of siol supplement are required for the entire vineyard. 1km2=247 acres
if you assume that the naoh which you will prepare for standardization is approximately 0.12 m calculate the number of
the likely intermediates in the mechanism and the expected isomeric products from the pathways of the mechnanism. Also please help to identify the major product attained.
A perfect gas has a constant volume heat capacity of C R V m = 1.5×R, . Calculate q and w for the process where 4.50 mol of this gas is heated with a 12 W heater for 400 seconds at a constant volume.
How many sigma bonds and pi bonds are present in the acetylene molecule and why?
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