The coefficients needed to balance the reaction Sb2S3 + HCl ? SbCl3 + H2S are, respectively,
a. 1, 2, 1, and 1.
b. 2, 1, 3, and 1.
c. 1, 2, 1, and 3.
d. 1, 6, 2, and 3.
e. 1, 1, 1, and 1.
d
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A wire contains a steady current of 2 A. The charge that passes a cross section in 2 s is:
A) 3.2 × 10-19 C B) 6.4 × 10-19 C C) 1 C D) 2 C E) 4 C
Which of the following speeds is greatest?
A) 10 km/h B) 10 m/s C) 10 ft/s D) 10 mi/h E) 10 yards/s
A hornet circles around a pop can at increasing speed while flying in a path with a 12-cm diameter. We can conclude that the hornet's wings must push on the air with force components that are
a. straight down. b. down and inwards. c. down and outwards. d. down and backwards. e. down, backwards and outwards.
Distinguish between a metal and a metal-containing compound
A) There is no distinction between the two. B) Only one of these contains ionic bonds. C) Only one of these contains covalent bonds. D) Only one of these occurs naturally.