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If a solution is prepared by dissolving 23.7g of CaCl2 in 375g of water. The density of the resulting solution is 1.05g/mL. The concentration of Cl- in this solution is _______ M?
A 28.0-g sample of water at 260. K is mixed with 51.0 g water at 310. K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings
How much energy is required to vaporize 158g of butane (C4H10) at its boiling point, if it has Hvap is 24.3kJ/mil
Water from a 5-mL pipet was drained into a weighing bottle whose empty mas was 9.974 g to give a new mass of 14.974 g at 26 degrees celcius. Find the volume of the pipet
The molecular formula of glycine (an amino acid) is NH2CH2COOH, the molecular mass is 75.07grams/mole. If 10 glycines are joined together by a dehydration reaction to make a polypeptide, what would the molecular mass of the polypeptide equal
Compare the relative greenness of this approach to at least one other extraction method: steam distillation or solvent extraction. List the green chemistry principles that differentiate the two approaches that you compare
When the reaction A + B = C is at equilibrium, the concentrations of different chemicals is as follows: [A] = 2.00 mM, [B] = 3.00 mM, and [C] = 9.00 mM. What is the standard free energy change for the reaction
An alternate method for determining rate law is to moniter concentration of each reactant continuously over span of rxn. explain no more in 1 paragraph how rate law is derived from data obtained.
An opened can of soda goes "flat" because the partial pressure of carbon dioxide is lower in the atmosphere than in the unopened can. Fish kills may occur in the summertime because an inadequate amount of oxygen is dissolved in the water. A soluti..
Calculate the lime dosage required for soften- ing by selective calcium removal for the following water analysis. The dissolved solids in the water are CO2 = 17.6 mg/L, Ca2 + = 63 mg/L, Mg2 + = 15mg/L, Na + = 20mg/L, Alk (HCO3- )
What mass of carbon monoxide in grams is present in a room measuring 10.5 × 11.0 × 20.5 ft?
Nitrogen monoxide, a gas recently found to be involved in a wide range of biological processes, reacts with oxygen to give brown NO2 gas. 2 NO(g) + O2(g) ? 2 NO2(g) ?rH° = -114.1 kJ/mol-rxn
Phosgene, COCl2, is formed from Cl2 and CO at high temperatures. The mechanism is thought to be: What is the rate law predicted for this mechanism
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