An ionic compound composed of a cation other than H+ and an anion other than OH- is called a(n)
a. salt.
b. precipitate.
c. conjugate base.
d. electrolyte.
a
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The intensity of radiation reaching the Earth from the Sun is 1350 W/m2. The Earth's radius is 6.4 × 106 m. How big a force does this radiation exert on the Earth? (Assume it is all absorbed.)
A. 5.8 × 108 N B. 1.2 × 109 N C. 2.3 × 109 N D. 4.6 × 109 N E. 1.7 × 1017 N
A transformer is to be designed to increase the 30 kV (rms) output of a generator to the transmission line voltage of 345 kV (rms). If the primary winding has 60 turns, how many turns must the secondary have?
a. 57 c. 690 b. 6900 d. 11
Monochromatic light of wavelength 500 nm is incident normally on a diffraction grating. If the third-order maximum of the diffraction pattern is observed at 32.0° from the central spot, how many TOTAL number of maxima can be seen?
A) 5 B) 7 C) 10 D) 11 E) 13
In which of these processes is an element transformed into a completely different element?
A) alpha decay B) beta decay C) both of these D) none of the above