Acids give what ions in aqueous solutions?
a. SO42-
b. Cl-
c. OH-
d. H+
d
You might also like to view...
A uniform 1.5-T magnetic field passes perpendicularly through the plane of a wire loop 0.30 m2 in area. What flux passes through the loop?
a. 0.135 T×m2 c. 0.45 T×m2 b. 5.0 T×m2 d. 0.25 T×m2
Why don't we expect to find life on planets orbiting high-mass stars?
A) The stars are too hot to allow for life. B) Planets cannot have stable orbits around high-mass stars. C) The high-mass stars emit too much ultraviolet radiation. D) The lifetime of a high-mass star is too short.
If the momentum of a particle is doubled, what happens to its de Broglie wavelength?
A. it doubles B. it halves C. it slightly more than doubles D. it becomes slightly less than half E. it decreases by a factor of 2-1/2
A solar eclipse that occurs when the moon's umbra does not reach Earth's surface is called
a. a total solar eclipse. b. a partial solar eclipse. c. an annular solar eclipse. d. a penumbral solar eclipse. e. an umbral solar eclipse.