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A 2.40-g sample of a large biomolecule was dissolved in 12.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85°C. Calculate the molar mass of the biomolecule. For carbon tetrachloride, the boiling point constant is 5.03°C · kg/mol, and the boiling point of pure carbon tetrachloride is 76.50°C.
175g of water was heated from 15c to 88c. how many calories were absorbed by the water
We performed this lab, but I'm having trouble taking the data collected and calculating the total concentration of both Ca2+ and Mg2+, along with the individual concentration of each.
2.70 mol of mn2o3 reacted with 2.60 mol of carbonmn2o3 3c rarr 2mn 3cocalculate the number of moles of carbon
Identifying Organic Compounds, A colorless liquid A (C3H6O) was soluble in water and ether, and had a boiling point of 94-96 degrees Celsius. It decolorized a Br2-CH2Cl2 solution and gave a positive ceric nitrate test
Compute the change in entropy of the universe if water vapor of one mol condenses to liquid water at the temperature of 100°C in a thin flask in an ambient laboratory temperature of twenty five degree celsius.
the rate of the constants for the above gas pharse reaction is 1.438M^-2 s^-1 at exactly 642.5 Kelvin and 21.64 M^-1 s^-1 at exactly 838.1 Kelvin. What is the value of the activation energy of the reaction in KJ/mole?
What is the length (in cm) of an edge of a cube of lead (density = 11.3 g/mL) which has a mass of 20.87 lb
A section of membrane with an aquaporin (AQP) has a water transport rate of about 3 billion water molecules per second (3 × 109 molecules·s-1).
2.362 grams of an unknown hydrate are heated until all the water is removed. The anhydride reside weight 2.015 grams. Calculate the percentage of water in this hydrate
The models you have just studied represent achiral molecules. Their mirror images are identical. They are optically inactive. Any molecule that has a plane of symmetry is achiral.
What is the final concentration of (in M) 17.2 mL iron(III) chloride solution with an initial concentration of 0.245 M which is diluted with 16.7 mL of solvent? Assume the volumes are additive.
During a acid catalyzed dehydration of 2-octanol. Why is trans-2-octene the major product instead of cis-2-octene
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