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Calculate the percent by mass of the solute in each of the following aqueous solutions. (a) 3.57 g of NaBr in 78.2 g of solution % (b) 31.0 g of KCl in 144 g of water % (c) 2.8 g of toluene in 29 g of benzene %
The heat of solution of ammonium nitrate is 26.2 kJ/mol. If a 5.368 g sample of NH4NO3 is added to 40.0 mL of water in a calorimeter at 23.5°C, what is the minimum temperature reached by the solution.
A japanese car is advertised as having a gas mileage of 15 km/L. Convert this rating to miles per gallon.
Which reaction mechanism, SN1 or SN2, is favored when NaI in acetone is used as the reagent for substitution reactions. Explain in some detail-consider solvent, nucleophile, and substrate structure.
Use regression analysis to investigate the relationship between the number of fatal accidents and the percentage of drivers under the age of 21. Discuss your findings.
A 2 cm string is fastened at both sides is plucked. What is the wavelength of the n = 4 standing wave? How many nodes does it contain?
The chlorinator feed rate is 4.0 mg/L and the free chlorine residual is 1.5 mg/L. (a) What is the chlorine demand (mg/L)? (b) How many kg of chlorine must be fed to the plant on a daily basis?
Calculate how many moles of nitrogen will be required to make 10.0 moles of NH 3 and calculate what is energy of each pulse If each pulse contains no of photons =1.20 x 10 18
Hydrogen gas was cooled from 150C to 50 C. It's new volume is75 mL. What was it's original volume?
what is the volume in milliliters of 20.0 g of acetone if the density of acetone is .791 g/ml?
Perform a mole balance over all materials to find n3, the molar flow rate of heated air and water vapor leaving the lines. What is the mole fraction of water vapor in the air and water vapor mixture stream leaving the heating lines
What is the most likely reason OSHA requires ammonium nitrate to be segregated for sulfur or finely divided metals? Explain your answer.
Marble (calcium carbonate) reacts with hydrochloric acid solution to form calcium chloride solution, water, and carbon dioxide.
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