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How much energy in joules does it take to raise 25.0g of liquid ethanol at 25.0°C to 78.0°C and then evaporate? Ethanol has a latent heat of fusion of 109 J/g and a latent heat of vaporization of 838 J/g. Ethanol also has a specific heat capacity of 2.44 J/gºC.
A total of 0.155 of this subunit was dissolved in enough water to produce 2.00 of solution. At 28 the osmotic pressure produced by the solution was 0.138 . What is the molar mass of the protein?
Why is a solution of sodium bisulfite added to the reaction product mixture? Write a reaction to account for what is happening
Draw graphs representing Boyle's law, Charles's law, and Gay-Lussac's law for a fixed amount of gas. Make sure that you label each axis and state the assumptions for each law-that is, the variable(s) that is (are) held constant for each law.
How many grams of O2 are needed to react with 20.9 grams of Mg?
You are given a worked wooden item from an archaeological dig believed to date to during the last glaciation. As such, the artifact would be another piece of evidence.
What is the molecular formula and structure? Also what does its infrared spectrum and NMR spectrum show?
For a reaction of hydrogen with iodine, the rate constant is 2.45*10^-4 L mol-1 s-1 at 302 C and 0.950 L Mol-1 s-1 at 508 C.
Phenylacetic acid (C6H5CH2COOH) is one of the substances that accumulates in the blood of people with phenylketonuria, and inherited disorder that can cause mental retardation or even death
In the boron trifluoride etherate-catalyzed reaction of acetic anhydride and salicylic acid to produce acetylsalicylic acid, or aspirin, anhydrous conditions prevail. So, what serves as the base, as water cannot?
Determine mass of water is contained in 2.8 Litres of the vapor in this solution at 55 degree celcius temperature express your answer in grams
What concentrations of acetic acid (pKa = 4.76) and acetate would be required to prepare a 0.20 M buffer solution at pH 4.5? Enter your answer to two significant figures.
you have dissolved 0.298 g of soda ash into 80 ml of deionized water. it took 19.8 ml of 0.0998 m hcl to titrate the
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