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A 350 ml gas piston is filled with .250 moles of gas at standard temperature and pressure. The pistonpushed into the cylinder reducing the volume inside the cylinder to 145 ml. At the same time the cylinder is heated to 75 degrees celsius. What is the resulting pressure in the system?
Thyroxine, an important hormone that controls the rate of metabolism in the body, can be isolated from the thyroid gland. If 0.455 g of thyroxine is dissolved in 10.0g of benzene, the freezing point of the solution is 5.144 degrees celcius.
how many grams of oxygen gas are requirednbsp if it is desired to inflate a baggie withnbsp 842 milliliters volume by
What is the pH at the stoichiometric point? What is the pH when 105% of the base required to reach the stoichiometric point has been added?
which of the following electron configurations represent an excited state?
What is the optical purity, or enantiomeric excess, of the 2-octanol produced in this reaction? 10% S. What is the ratio of enantiomers of 2-octanol in the product mixture
Heptane (C7H16) and octane (C8H18) are constituents of gasoline. At 80.0 ?C, the vapor pressure of heptane is 428 mmHg and the vapor pressure of octane is 175 mmHg.
A 1.29 g sample of stearic acid (C18H32O2), a common constituent of fats, is burned in a bomb calorimeter
1. Which of the following is NOT a form of potential energy. a. compression of a spring b. electrostatic force c. gravity d. a free electron moving at 1000 m/s e.
In the neutralization reaction: HCl (aq) + NaOH (aq) = NaCl (aq) +H20, 25.0 mL of 0.212 M NaOH is neutralized by 13.6 mL of an HCl solution. The molarity of the HCl solution is ?
The Instructor recently had his car inspected by the KWIK Stocker State Inspection at Webster, Texas. The table below shows part of the Emission Test Results.
Calculate the change in entropy when one mole of ice at ?10.0°C and 1 atm is converted to liquid water at ?5.0°C and 1 atm
A solution contains a mixture of cl- and br- ions . can both be positively identified? write appropriate equations to support your
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