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Butylated hydroxyanisole (BHA) is used as an antioxidant in margarine and other fats and oils; it prevents oxidation and prolongs shelf life of the food. What is the molar mass of BHA if 0.640 grams of the compound, dissolved in 25.0 grams of chloroform, produces a solution whose boiling point is 62.22 degrees Celsius? The normal boiling point of chloroform is 61.70 degrees Celsius and Kbp for chloroform is +3.63 degrees Celsius/m.
A 10.0 ml sample of hcl is titrated with 0.5062 m naoh. 16.58 is required to reach the equivalence point. what is the molarity of the hydrochloric acid solution
What are the products of a Diels-Alder reaction between 1mL (12mmol) of cyclopentadiene and 1.393g (12mmol) of fumaric acid? and what is the Theoretical Yield? please show calculations
Comment on whether these are made of the same materials or not, and explain your response. The density is different in each, so they are made of different materials.
In the above system, if lead nitrate is added to sodium chromate, what concentration of lead nitrate is required to begin formation of a precipitate? CHOOH(aq) + H2O(l) CHOO-(aq) + H3O+(aq)
which hydroxide precipitates first as NaOh is slowly added to the solution? b) what is the molar concentration of the first cation precipitated when the other cation just starts to precipitate out of solution?
Draw diagrams to show the various orientations in which a p orbital and a d orbital on adjacent atoms may form bonding and anti-bonding molecular orbitals.
The boiling point of methanol (CH 3 OH) is 64.7 o C and delta H vap = 71.8 kJ/mol. What is delta S for the vaporization of 2.15 mol of CH 3 OH at 64.7 o C?
At a fixed temperature and pressure, how does the value of the heat of sublimation of a substance compare with that of its heat of deposition?
The solute increases the volume of the solution, and an increase in volume requires an increase in the temperature to reach the boiling point (derived from PV = nRT).
Give the name or chemical formula and draw all possible structures: 1. bis(en)Co(3)-u-imido-u-hydroxobis(en)Co(3) ion 2. [Cr(o-phen)(NH3)2Cl2]+ 3. (p-phen: C12H8N2; 1,10-diaminophenanthrene)
Ethan contain 2.659 carbon and .668 gm of H, and one sample of acetylene contains 4.59 g of carbon and .382 gm of h. write emperical formula for ethane , acetylene
What is the molecular arrangement of bonds at every carbon atom of crotononitrile. (ex like trigonal plant, trigonal pyramidal, linear etc.)
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