Which sample contains the same number of atoms as 175.0 g of cadmium (Cd) ?
A) 225 g Pb
B) 175 g Hg
C) 307 g Au
D) 142 g Ir
E) 305 g Sn
Correct Answer:
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Q50: Which element can be classified as a
Q51: Write the atomic symbol for an atom
Q52: 14O, 16O, 18O are called _.
Q53: Which element is highly reactive?
A) Cu
B) Kr
C)
Q54: Which element can be classified as a
Q56: Which sample contains the fewest number of
Q57: Which sample contains the fewest atoms?
A) 10
Q58: Which element can be classified as a
Q59: Radioactive atoms emit alpha and _ particles.
Q60: Which sample contains the fewest atoms?
A) 50
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