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A balloon is inflated with 0.2494 g of helium to a pressure of 1.26 atm. If the desired volume of the balloon is 1.250 L what must the temperature be in degree celcious
A 25.5g aluminum block is warmed to 65.3 degC and plunged into an insulated beaker containing 55.0g water initially at 22.3 degreeC. The aluminum and the water are allowed to come to thermal equilibrium.
A subsequent titration revealed that the concentration of the unknown acid was 0.868 M. What was the concentration of the diluted acid om the Erlenmeyer flask?
What mass of solid sodium hypochlorite (molar mass = 74.44 g/mol) should be added to 1.0 L of 0.255M hypochlorous acid to make a buffer with a pH of 7.54? (Ka of HClO = 3.8 x 10-8)
How do the following changes affect the value of the equilibrium constant for a gas-phase exothermic reaction:
How does this work. Do you just omit the H20/Oh-. Calculate the value for the equilibrium constant for each of the following aqueous reactions.
Supppose that a 1 L solution is made from 226 mg of citric acid (C6H8O7).What is the molarity of citric acid?
determine the structures of Compounds A, B, C, D, and E. Show calculations. Support all of your structure determinations. Student performed a sodium borohydride reduction experiment
When you combine 2-ethoxybenzaldehyde and 4-heptanone what is the product and structure of that product. With 95% ethanol and 3M sodium hydroxide
TNT(trinitrotoluene) decomposes exposively What volumes of Hydrogen gas and Nitrogen gas are produced if 5.8 liters of CO is produced ?
To whats volume in liters must 105 mL of hydrochloric acid containing 47.5g of HCl be diluted to make a 1.05M solution ?
What mass of KBr is needed to prepare 325 mL of 0.750M? How many mL of 2.50M KBr is needed to prepare this same solution
A 28.5 g sample of an unknown metal is heated to 95.0C and then dropped into 58.0 g of water in a coffee-cup calorimeter. The temperature of the water rises from 23.5 C to 27.1C.
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