What do a 12.01 g sample of carbon and 24.3 g sample of magnesium have in common?

A. They have the Same density
B. Each contains 0.5 moles of particles
C. Each contains 6.02 x 10^23 atoms
D. They have the same number of valence electrons

Option C. Each contains 6.02 x 10^23 atoms

Explanation:

From Avogadro's hypothesis, 1mole of an element contained 6.02x10^23 atoms.

If this is so, all elements therefore have the same number of atoms present in them.

1 mole of carbon = 12. 01g/mol = 6.02x10^23 atoms.

1 mol of magnesium = 24.3g/mol = 6.02x10^23 atoms.

From the above we can see that 12.01g of carbon and 24.3g magnesium both have 6.02x10^23 atoms.

b..

is the correct one

explanation:

covalent bonds form as valence electrons are shared between two atoms. lewis structures and structural formulas are common ways of showing the covalent bonding in organic molecules. formal charge describes the changes in the number of valence electrons as an atom becomes bonded into a molecule.

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