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If 15.0 g of water vapour at 135 °C cools to 100°C, condenses to liquid water, and then cools to 90°C, how much energy is released to the environment?
If all the energy obtained from burning 1.01 pounds of propane is used to heat water, how many kilograms of water can be heated from 20.7 degrees celsius to 47.1 degrees celsius
backgroundan experiment was performed using hcl. we wrote down the molarity on the bottle and then used a ph meter to
What are the spectator ions in the solution after completely precipitating an insoluble hydroxide compound when mixing KOH (aq) and FeCl2 (aq)
Calculate the volume of glacial acetic acid needed to make 1L of the buffer. Glacial acetic acid is 99.5% acetic acid
Name the kinds of intermolecular forces that exist between molecules (or basic units) in each of the subsequent species.
By using your knowledge in chemistry, demonstrate the difference between the limiting reagent, excess reagent, and theoretical yield by referring to the above e
A compound containing nitrogen and oxygen is decomposed in the laboratory and produces 1.78g of nitrogen and 4.05g oxygen. Calculate the empirical formula of the compound.
COCl2 decomposes to CO and Cl2 Initially, the pressure is 1 atm when COCl2 is injected. After equilibrium, the total pressure is 1.2 atm
1. A. Why does DNA move through an agarose gel? B. What is the function of the running buffer used during gel electrophoresis?
Suppose you made up a solution in which you dissolved 4.5 g of glucose (C6H12O6) into a total volume of 200mL. What is the % w/v concentration
An excess sample of solid Ag2SO3 is added to 100 mL of water. After equilibrium is achieved between the solid and its aqueous ions the silver ion concentration is found to be 2.486e-05 Use this information to find Ksp for Ag2SO3
What is the molar concentration of Mn in the unknown solution
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