An atom that has equal amounts of protons and electrons is a ______________ ion
a. neutral
b. positive
c. negative
d. polyatomic
a
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The news writing style that places a summary first, followed by details, then background information is called the ______ style.
A. chunked text B. inverted pyramid C. dense paragraph D. conclusion-first
Two bulbs are shown in a circuit that surrounds a region of increasing magnetic field directed out of the page. When the switch is closed,
A. bulb 1 glows more brightly. B. bulb 2 glows more brightly. C. both bulbs continue to glow with the same brightness. D. bulb 1 goes out. E. bulb 2 goes out.
The Huygens probe of the ESA made a successful landing on
A) Mars. B) Saturn. C) Europa. D) Titan. E) Triton.
A container having a volume of 1.0 m3 holds 5.0 moles of helium gas at 50°C. If the helium behaves like an ideal gas, the average kinetic energy per molecule is
a. 6.7 × 10^?20 J. b. 1.0 × 10^?21 J. c. 1.0 × 10^?20 J. d. 6.7 × 10^?21 J. e. 1.3 × 10^?20 J.