Which of the following compounds would you expect to be soluble in water?
a. PbCO3
b. Ag2CO3
c. CuCO3
d. K2CO3
d
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A compressible fluid is flowing through a pipe with a constriction. The diameter of the narrow section is 1/2 the diameter of the wide section. The density of the fluid in the narrow section is 3/4 the density of the fluid in the wide section. If the velocity of the compressible fluid is 3.600 m/s in the narrow section, then what is the velocity of the fluid in the wide section?
A. 0.675 m/s B. 0.805 m/s C. 0.250 m/s D. 0.333 m/s E. 0.500 m/s
The four tires of an automobile are inflated to a gauge pressure of 2.0 × 105 N/m2 (29 PSI). Each of the four tires has an area of 0.024 m2 that is in contact with the ground. Determine the weight of the auto.
What will be an ideal response?
How can a nucleus be described by particular values of A, Z and N when the mass of the nucleus is not equal to Zmp + Nmn, where mp and mn are the masses of free protons and neutrons?
a. A, Z and N have no intrinsic meaning. b. A, Z and N describe the number of particles of given types, but mass has no meaning when part of the mass is elsewhere in the universe. c. A, Z and N describe the number of particles an ideal rather than a real nucleus would have. d. A, Z and N describe the number of particles of given types in the nucleus, but not their masses in a bound state. e. A, Z and N describe the number of particles of given types in the nucleus since the missing mass consists of electrons that are also present in the nucleus.
What primary color must be added to magenta light to produce white light?
A. Yellow B. Blue C. Green D. Red E. Magenta