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A 334-mL cylinder for use in chemistry lectures contains5.225 g of helium at 23 °C. How many grams of helium must be released to reduce the pressure to 75 atm assuming ideal gas behavior?
Complete reaction of 4.00 grams Al at 25 celsius and 1.00 atm releases 124.1 kJ heat to the surroundings. What is the enthalpy change of the reaction at 25 celsius and 1.00 atm in kj/mol rxn.
Write a chemical reaction demonstrating that SO2 is an acidic oxide. c) Write balanced chemical reactions demonstrating that Al2O3 is amphoteric.
which of these has the highest vapor pressure in a sealed container at a temperature cool enough to produce a liquid? a). CH2CH2OH b). NCl3 c). H2 D). N2 e). CH2OH
Develop a use case diagram for renting acar. Include actors representing a fleet mechanic, a rental agent, and acustomer, and use cases for reportMechanicalProblems(), orderRepairs(), makeRepairs(), makeReservation(), rentCar(), andreturnCar().
ch4 2o2 -gt co2 2 h2ohow many liters of ch4 at 27 degrees c and 1.5 atm are required to react with 1 mole of oxygen?v
How does one find the volume fraction of a block that is submerged in both water and oil (oil on top and both water and oil below) when suspended
The absorbance value of the diluted solution corresponded to a concentration of 6.85×10-6 M. What was the concentration of the original solution?
Problem- Calculate the volume in milliliters of an organic solvent that must be used to remove 60 % of a compound present in 100 mL of an aqueous solution with only on extraction. Given Korganic solvent/water = 3.0.
Starch and cellulose are both made of chains of glucose units. The human body can digest starch but why can it not digest cellulose
What is the molar solubility of CaF2 in 0.10 M NaF solution at 25°C? The Ksp for CaF2 is 1.5x10^-10.
when extracting an organic compound from an aqueous solution into an organic solvent e.g. diethyl ether a chemist will
Determine the pH of a 0.227 M C5H5N solution at 25°C. The Kb of C5H5N is 1.7 x 10-9.
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