Minerals are formed from the combination of different elements. The combination of different metallic elements produces
A) metallic minerals.
B) metallic and nonmetallic minerals.
C) nonmetallic minerals.
D) polymorphs.
Answer: B
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A. currency B. connectivity C. interactivity D. delivery
The reaction Fe + CuSO4 ? Cu + FeSO4 is a(n) ______________-replacement reaction
Fill in the blank(s) with correct word
pressure drop of 200 kPa is measured over a 50-m-length of 2-mm-diameter pipe transporting 30°C water. If a laminar flow exists, the flow rate is nearest:
(A) 0.00195 L/s (B) 0.00243 L/s (C) 0.00732 L/s (D) 0.00991 L/s
If a 20 W laser beam, which has an initial diameter of 2.0 mm, spreads out to a diameter of 2.0 m after traveling 10,000 m, what is the final intensity of the beam?
a. 
b. 
c. 
d. 
e. 