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Why would no amine be extracted if NaOH is not added to the amine salt prior to extracting the amine with dichloromethane?
Calculate the energy that must be removed to convert substance X from a gas at 119°C to a solid -47.9°C. Assume X has a molar mass of 75.0 g/mol.
Problem- A temperature rise from 27.0 degrees C to 42.0 degrees C for a 0.0487 kilogram sample of pure lead required 93.5 Joules of heat. Calculate the specific heat of lead.
A solution is made by combining 15.0mL of 16.5M acetic acid with 5.52g of sodium acetate and diluting to a volume of 1.50L Calculate the pH
The Kow for carbon tetrachloride is 220. Using the rule of thumb that log(Koc) = .8*log(Kow), and assuming an organic carbon content of 1% you can estimate the retardation factor for carbon tetrachloride.
The solubility of copper (I) chloride is 3.91mg per 100.0mL of solution. Find the Ksp for copper (I) chloride.
A gas mixture with a total pressure of 770 contains each of the following gases at the indicated partial pressures: , 265 ; , 134 ; and , 159 . The mixture also contains helium gas. What is the partial pressure of the helium gas?
Discuss the behavior of tungsten trioxide (or molybdenum trioxide) and product(s)
When the gas had entirely condensed, he weighted the flask and the liquid mass of 250-mL Erlenmeyer flask and liquid 79.118g a. explain what is the mass of the liquid in the flask. b. explain what is the molar mass of the unknown liquid in g/mole
You obtain the following six measurements for the mass of water delivered by a special calibrated volumetric pipette: 1.180 g, 1.185 g, 1.181 g, 1.173 g, 1.182 g, and 1.181 g. determine the mean and confidence interval of these measurements at a c..
What is the (a) molality, (b) freezing point, (c) boiling point of a solution containing 100.0 g of ethylene glycol (C6H6O2) in 150.0 g of water
Solid lead (I) sulfide reacts with aqueous hydrochloric acid to form solid lead (II) chloride and dihydrogen sulfide gas.
which of the following alcohols undergoes dehydration at the fastest rate on being heated with H2SO4? a) 1-butanol b)2-methyl-1-butanol c)2-methyl-2-butanol d)3-methyl-1-butanol e)3-methyl-2-butanol?
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