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What volume and mass of the ethanol/water mixture did you collect from the simple distillation?
A compound is known to contain 51.27% carbon and 27.30% oxygen by mass. Each molecule contains two atoms of oxygen. What is the molar mass of this substance
Methanol can be produced by the reaction shown below with the following thermodynamic data given at 25 degree Celcius.
What chemical features and properties of detergents make them better than soap for hard water application?
gas has a volume of 0.40 L and a pressure of 6.0 atm, what is its kelvin temperature?
which one of the following is chiral? a. 1,1-Dibromopropane b. 1,2-Dibromopropane c. 1,3-Dibromopropane d. 2,2-Dibromopropane e. 2-Bromo-2-chloropropane
An isotonic solution is described as 0.92% NaCl (g/mL). Would this also be the required concentration for isotonic solutions of other salts, such as KCl, MgCl2,
The molecular mass found by mass spectrometry is 210.06 amu. What is the molecular formula of the compound?
Determine the final temperature of the mixture. (Use 1g/mL as the density of water)
A student is asked to prepare a buffer solution at pH=8.60 using one of the following weak acids HA (kA=2.7*10^-3), HB (Ka = 4.4*10^-6) and HC (Ka = 2.6 *10^-9).
The I2 that did not react with ascorbic acid is then determined in a thiosulfate reaction. If 40.0mL of 0.4445M I2 was added to a sample containing vitamin C, the unused I2 required 19.05mL of 0.142M S2O32- to react. How many moles of vitamin C we..
Perform a series of experiments for the reaction A?B+C and find that the rate law has the form rate = k[A]x. Determine the value of x in each of the following cases.
the initial dose of a drug ina animal was 25.0mg/kg doy weight. After 2.0 hours this concentration had dropped to 15.0mg/kg body weight. if the drug is eliminated metabolically by the first order process
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