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A swimming pool, 10,0 m by 4.0 m is filled with water to a depth of 3.0 m at a temperature of 20.2 C.
if the energy needed to raise the temperature of the water to 28.1 C is obtained from the combustion of methane (CH4), what volume of methane, measured at STP must be burned?
H combustion for CH4=-891 kj/ mol
Volume CH4 needed= give the answer in L
a soft drink contains 35 mg. of sodium in 315g. of h2o. what is the concentration of sodium in the soft drink in mass
For the cell as written, what is the voltage after the addition of the following volume of NaI solution? The reduction potential for the saturated calomel electrode is E = 0.241 V. The standard reduction potential for the reaction
Water boils at a much higher temperature than all other molecules of similar molecular weight because: it makes very strong hydrogen bonds
when two atoms collide some of their kinetic energy may be converted into electronic energy in one or both atoms. if
The molar mass of cellulose is approximately 6.0 x 10^5 g/mol and the molar mass of a soluble starch is on the order of 4.0 x 10^3 g/mol. The monomer unit in both of these molecules has the emperical formula C6H10O5.
A 0.2500 g sample of impure potassium chloride was treated with an excess of AgNO3. The precipitate was filtered, washed, and dried in a crucible with an empty mass of 34.9736 g.
Calculate the % atom economy for the following two methods for converting benzene, C6H6, to aniline, C6H5NH2.
Draw the bondline structures of the isomers of this compound in the manner requested: Its diastereomer C, its optically active isomer D.
What volumes of 0.1000M Acetic Acid and 0.1000M Sodium Hydroxide should be mixed to prepare 1.000L of a buffer solution of pH 4.5 at 250C
The freezing temperature of ethanol is -114.0 oC, the density is 0.789 g/cm3, and Kf is 1.99oC/m. Calculate the new freezing point when 0.100 L of methanol
A compound, A, c6h8, yields a single organic product, B, upon ozonolysis and absorbs two moles of hydrogen on catalytic hydrogenation to give C
to form a molecule with an octahedral electron geometry what set of pure atomic orbitals must be mixed?
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