calculate number of atoms of following.
a, 140g C atom
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calculate number of atoms of following.
a, 140g C atom
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Answer:
To calculate the number of atoms in a sample, divide its weight in grams by the amu atomic mass from the periodic table, then multiply the result by Avogadro's number: 6.02 x 10^23.
Explanation:
Answer:
Explanation:
12 g is 1 mole
140g is 140/20
7 moles
1 mole ------------Na= 6 x 10²³atoms
7 moles ------------7x6x10²³
42x10²³ atoms