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2.70 moles of Fe x (6.022 x 10^23) atoms of Fe = 1.63 x 10^24 atoms of Fe
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1 mole of Fe
Answer: 1.63 x 10^24 atoms of Fe
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Answer: When atoms combine through chemical bonding, they form compounds—unique structures composed of two or more atoms. The basic composition of a compound can be indicated using a chemical formula.
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The rate of effusion of H₂ : 7.2 x 10⁻² m/s
<h3>Further explanation </h3>
Graham's law: the rate of effusion of a gas is inversely proportional to the square root of its molar masses or
the effusion rates of two gases = the square root of the inverse of their molar masses:

or

MW₁ O₂ = 32 g/mol
MW₂ H₂ = 2 g/mol

Answer: The mass of the nucleus is less than the mass of the 8 protons and 8 neutrons.
Explanation: