A helium-filled balloon of the type used in long-distance flying contains 420, 000 ft^3 (1.2 times 10^7 L) of helium. Suppose you fill the balloon with helium on the ground, where the pressure is 741 mm Hg and the temperature is 24.4 degree C. When the balloon ascends to a height of 2 miles, where the pressure is only 600. mm Hg and the temperature is -33 degree C, what volume is occupied by the helium gas? Assume the pressure inside the balloon matches the external pressure.
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Chemistry, 22.06.2019 02:10
When 225mg of anthracene, c14h10(s), was burned in a bomb calorimeter the temperature rose by 1.75k. calculate the calorimeter constant. by how much will the temperature rise when 125mg of phenol, c6h5oh(s), is burned in the calorimeter under the same conditions? (δch< (c14h10,s)=â7061 kj molâ1.)
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Chemistry, 22.06.2019 03:30
Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.
Answers: 1
Chemistry, 22.06.2019 14:00
Calculate the energy required to ionize a hydrogen atom to an excited state where the electron is initially in the n = 5 energy level. report your answer in kilojoules
Answers: 1
A helium-filled balloon of the type used in long-distance flying contains 420, 000 ft^3 (1.2 times 1...
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