What is the origin of the nitrogen in Titan's atmosphere?
A) gas captured from the solar nebula
B) breakdown of ammonia (NH3 ) by ultraviolet light from the Sun
C) outgassing from Titan's interior
D) impacts from comets
B
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T = 400 K?
A. Lead B. Iron C. Both should be about the same.
The alpha particle has twice the electric charge of the beta particle but deflects less than the beta in a magnetic field because it
A) moves much slower. B) moves much faster. C) has much more inertia. D) has much less inertia.
The electronegativity of the inert-gas atoms is equal to:
(a) undefined (b) 0 (c) 1 (d) 2
According to the Big Bang model, in the earlier state of the Universe gamma rays converted into ________.
A. hydrogen and helium B. pairs of matter and antimatter C. pairs of protons and neutrons D. X-rays