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A swimming pool measures 25 meters wide by 145 meters long by 1 meters deep. How many gallons of water are required to fill the pool?
An oil bath maintained at 50.5oC loses heat to its surroundings at the rate of 4.68 kJ/min. Its temperature is maintained by an electrically heated coil with a resistance of 60 operated from a 110 V line.
What is the pH of the solution obtained when 135 mL of 0.618 M NaOH is diluted to 16.0 L with water?
caclculate the number of grams of Fe formed when 0.300kg of Fe2O3 reacts.
sucrose solution is allowed to react for 195 minutes then determine the mass of sucrose that is hydrolyzed?
An expanding gas does 150.0 J of work on its surroundings at a constant pressure of 1.01 atm. If the gas initially occupied 68.0 mL, what is the final volume of the gas.
Write a balanced equation for the reaction. What volume of 0.200M MnO4- solution is needed to titrate 22.5mL of a 0.350M solution of ethanol?
a gas mixture being used to stimulate the atmosphere of another planet consists of 323 mg of methane, 165 mg of argon, and 223 mg of nitrogen. The partial pressure of nitrogen at 275 k is 19 kPa.
Organic chemistry mechanism and conceptual problems involving, 1. Write equations to show how nitronium ions might be formed using a mixture of nitric and sulfuric acids.
A solution is prepared by dissolving 297 g of sucrose (C12H22O11) in 624 g of water. What is the vapor pressure of this solution at 30°C? (The vapor pressure of water is 31.8 mmHg at 30°C.)
Sulfuric acid (H2SO4) is a very strong diprotic acid. If 0.025 moles of sulfuric acid is mixed with water to make 115 mililiter of solution, what is the molarity of H+?
How many moles of chloroform, CHCl3, are required to fill a 253-mL flask at 100.0°C and 940 torr?
What mass of HCl is contained in 30.0ml of a solution solution which is 37.2 mass% HCl has a density of 1.19g/ml.
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