Which would produce a more highly valued element, adding or removing a proton from the element gold?
What will be an ideal response?
Removing a proton: Gold then turns into more valued platinum. Adding a proton turns gold into mercury, which is less valuable.
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A galaxy is: a. a thin cloud from which a sun and planets can form
b. a large diffuse cloud of gas. c. what forms in the center of a cloudlike sphere of gases that flattens and condenses. d. a huge rotating aggregation of stars, gas, and other debris held together by gravity.
Which air mass is associated with the highest sea level pressure?
A) mP B) mT C) cP D) cT
Debris flows are different from mudflows in that they ____
A)move faster B)are confined to pre-existing channels C)contain more water D)are less damaging E)are composed of larger particles
When the ________ came to a close, dinosaurs became extinct.
A. Precambrian B. Holocene Epoch C. Paleozoic Era D. Mesozoic Era E. Cenozoic Era