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A 12.0 g ice cube, at 0.00°C is placed inside a calorimeter (the heat capacity of which is negligible) containing 145 g of water at 20.8°C. Once the ice cube has melted what is the temperature of the water inside the calorimeter?
combustion of a .225g sample of a compound containing only carbon hydgrogen and oxygen produces .306g water and .561g
The bright-red color of highway safety flares comes from strontium ions in salts such as Sr(NO3)2 and SrCO3. Burning a flare produces strontium ions in excited states,
Determine the boiling point of a solution that contains 78.8g of napthalene c10h8 molar mass 128.16 g/mol dissolve in 722 mL of benzene (d = 0.877 g/mol. pure benzene has a boiling point of 80.1*C and a boiling point elevation constant of 2.53*C/m
A 31.43 ml volume of .108M NaOH is require to reach the phenolphthalein endpoint in the titration of a 4.441g sample of vinegar. Calcute the percent acetic acid in the vinegar.
Eventually, the water becomes saturated with respect to NaCl. Write a balanced chemical reaction illustrating the precipitation of NaCl and explain saturation
If 3.60 mL of vinegar needs 45.0 mL of 0.135 M NaOH to reach the equivalence point in a titration, how many grams of acetic acid are in a 1.50 qt sample of this vinegar?
If the equilibrium constant for the reaction H2O + CO = CO2 + H2 is 2.5, the equilibrium conversion of CO is lower than 65%
What quantity of energy as heat is required to vaporize a 60 mL of mercury at 357 C, its normal boiling point? The density of mercury is 13.6 g/mL and Atomic Mass is 200.59 g/mol.
An automobile gasoline tank holds 21kg of gasoline,when the gasoline burns, 84kg of oxygen is consumed, and carbon dioxide and water is produced. What is the total combined mass of carbon dioxide and water?
Water is flowing into a vertical-wall box stormwater catch basin at 0.027 m^3/s. The catch basin dimensions are 3.0*3.5*2.5 meters (l*w*h) before it overflows into the storm sewer.
Presume complete dissociation of the solute, Explain how many grams of KNO3 must be added to 275mL of water to produce a solution that freezes at -14.5. The freezing point for pure water is 0.0 and Kf is equal to 1.86
Question- If a reaction take 10 minutes to reach completion, how many minutes would the same reaction require if an enzyme that increases the reaction rate one million times were added to the reaction mixture
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