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For the procedure of a certain liquid vaporizing at 1atm, delta H= 55.5 kJ/mol as well as delta S= 74.1 J/mol K. Presume these values are independent of T, Explain what is the normal boiling point of this liquid ignore significant figures a) 749 C b) 1022 C c) 476 C d) 0.749 C e) none of these
The men's world record for swimming 1500.0 m in a long course pool (as of 2007) is 14 min 34.56 s. At this rate, how many seconds would it take to swim 0.800 miles.
A scuba divers tank contains 0.29kg of O2 compressed into a volume of 2.3L. Calculate the gas pressure inside the tank at 9 degrees C
A cylinder with a moveable piston contains 184mL of nitrogen gas at a pressure of 1.02atm and a temperature of 306 K. What must the final volume be for the pressure of the gas to be 1.52m atm at a temperature of 370 K
Titration of a .7439g sample of impure Na2B4O7 required 31.64mL of .1081M HCl. Express the results of this analysis in terms in percent
a sample of 4.00 g of a substance with a molar mass of 80.0 gmol is combusted and the heat released is used to heat
What mass of ammonium chloride, NH4Cl, (Ka = 5.6 x 10^-10) must be added to exactly 500mL of 0.10M NH3 solution to give a solution with a pH of 9.00
where a is constant and -infinity
corn farmers typically use 5000 kg of ammonium nitrate per square kilometer of cornfield per year. Ammonium nitrate can be prepared by the following reaction. how much nitric acid would be needed to make the fertilizer needed for 1km2 of cornfield..
the elementary chemical reactiono clo--gtcl o2is made pseudo-first order in oxygen atoms by using a large excess of
two iron bolts of equal mass - one at 100 degrees celcius the other at 55 degrees celcius - are placed in an insulated
A compound is constituted by mass of 22.6% phosphorus, the rest being chlorine. Given that a volume of 307 mL of the gas has a mass of 1.55 g at 25 °C and 90 kPa, find the molecular formula for this compound
anesthetic contains 64.9 % carbon, 13.5 % hydrogen, and 21.6 % oxygen by mass. At 120 degrees C and 750 mmHg, 1.00 L of the gaseous compound weighs 2.30 g.
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