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What metal with a relatively low melting point is used in fire detection, extinguishing devices, and electrical fuses?
a) Copper
b) Silver
c) Gold
d) Aluminum

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A certain atom has atomic number Z = 25 and atomic mass number A = 52.
What are ethics and social responsibility
Susana no vive en Brasil. Correct Incorrect
Simplify the expression. Explain each step 2 + (5 + y)