Which statement about the ecliptic is FALSE?
A) The Sun appears to move about a degree per day eastward long it.
B) It is tilted 23.5 degrees with respect to the equator.
C) The year is marked by the Sun's return to the same place along it.
D) The Moon can never leave it, but moves twelve times faster than the Sun.
E) The major planets stay close to it, but not always on it.
D
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Ideal Gas Law: A 0.40-m3 gas tank holds 7.0 moles of ideal diatomic nitrogen gas at a temperature of 290 K. The atomic mass of nitrogen is 14.0 g/mol. What is the pressure of the gas? (R = 8.31 J/mol ? K, 1 atm = 101 kPa)
A. 42 atm B. 37 atm C. 32 atm D. 27 atm E. 22 atm
If a neutral element has the following chemical notation, how many electrons does it have?
fluorine-19 A) 9 B) 10 C) 11 D) 19 E) none of the above
The binding energy of the hydrogen atom in its ground state is -13.6 eV. What is the energy when it is in the n = 5 state?
A) 0.544 eV B) 2.72 eV C) -2.72 eV D) -0.544 eV E) -68 eV
The splitting of spectral lines in the presence of strong magnetic fields is the:
A) Doppler effect. B) Second Law of Kirchhoff. C) Zeeman effect. D) photoelectric effect. E) polarization of sunlight.