One milliliter of helium gas contains 26,900,000,000,000,000,000 atoms at normal temperature and pressure.Express the number of atoms in scientific notation.
A) 2.69 x 1017
B) 2.69 x 1018
C) 2.69 x 1019
D) 26.9 x 1018
E) 26.9 x 1019
Correct Answer:
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