Balance the chemical equation: PCl5 + H2O ? H3PO4 + HCl
PCl5 + 4H2O ? H3PO4+ 5HCl
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How did oxygen (O2) get into Earth's atmosphere?
A) It was released by life through the process of photosynthesis. B) It was captured from the solar nebula. C) It was outgassed from volcanoes. D) It came from chemical reactions with surface rocks.
The disk of the Milky Way is approximately 20,000 ly in diameter
a. True b. False Indicate whether the statement is true or false
A compression, at a constant pressure of 190 kPa, is performed on 5.0 moles of an ideal monatomic gas. The compression reduces the volume of the gas from 0.19 m3 to 0.12 m3. The ideal gas constant is R = 8.314 J/mol ? K
The work done by the gas is closest to A) -13 kJ. B) 13 kJ. C) -33 kJ. D) 33 kJ. E) 0.00 kJ.
A 2.60 kg mass is moving in a circular path with a constant angular velocity of 5.50 rad/sec and with a tangential velocity of 3.50 m/sec. The centripetal force on the mass is
A. 30.4 N. B. 40.5 N. C. 50.1 N. D. 60.5 N. E. 66.7 N.