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A sample of ideal gas at room temperature occupies a volume of 23.0l at a pressure of 232torr . If the pressure changes to 1160torr , with no change in the temperature or moles of gas, what is the new volume,V2 ?
a buffer is prepared by combining 10.0 g of NaH2PO4 with 150 mL of 0.20 M NaOH and diluting to 2.0 L. what is the pH of the buffer? (Ka (H2PO4-)= 6.2 x 10^-8)
write a balanced chemical equation for the reaction that occures in the experiment (B) Give the net ionic equation for this reaction
A closed container is filled with oxygen. The pressure in the container is 375kPa . What is the pressure in millimeters of mercury
Determine the normal boiling point of a substance whose vapor pressure is 55.1 mm Hg at 35°C and has a Hvap of 32 .1 kJ/mol.
How much would an empty volumetric flask, (weighing 27.16 grams, has a volume of 100.4 cm3 ) weigh when filled with bromine, an element that has a density of 3.1028 g/cm3.
Determine the intermolecular distances for the two molecules and account for their similarity or difference.
A student is asked to react 3-methyl-2-butanol with HBr. predict the products and explain why the experiment will not be as successful for production of an alkyl bromide as the reaction of 1-butanol with HBr
Calculate the [H3O+] and the pH for a buffer that consists of 0.13 M HF and 0.29 M KF. (Ka of HF = 6.8x10^-4)
Classify the reaction type : combination , combustion, decomposition , single displacement, or double-displacement
A piece of metal of mass 20 g at 99?C is placed in a calorimeter containing 55.8 g of water at 23?C. The final temperature of the mixture is 30.4?C.
a cylinder with a moveable piston contains 0.93 of gas and has a volume of 344. what will its volume be if an
At a certain temperature, the solubility of strontium arsenate, Sr3(AsO4)2, is 0.0690 g/L. What is the Ksp of this salt at this temperature
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