Respuesta :

Eduard22sly

Answer:

4.98x10^-3 mole

Explanation:

According to Avogadro's hypothesis, 1 mole of any substance contains 6.02x10^23 atoms. This greatly implies that 1 mole of calcium will also contain 6.02x10^23 atoms.

Now, if 1 mole of calcium contains 6.02x10^23 atoms,

then Xmol of calcium will contain 3x10^21 atoms i.e

Xmol of calcium = 3x10^21/6.02x10^23

Xmol of calcium = 4.98x10^-3mol

Therefore, 4.98x10^-3 mole of calcium contains 3x10^21 atoms

dsdrajlin

3.00 × 10²¹ atoms of calcium are equivalent to 4.98 × 10⁻³ moles of calcium atoms.

To convert atoms to moles we need a conversion factor: Avogadro's number. According to Avogadro's number: there are 6.02 × 10²³ calcium atoms in 1 mole of calcium atoms. The number of moles corresponding to 3.00 × 10²¹ atoms of calcium are:

[tex]3.00 \times 10^{21} atoms \times \frac{1 mol}{6.02 \times 10^{23} atoms} = 4.98 \times 10^{-3} mol[/tex]

3.00 × 10²¹ atoms of calcium are equivalent to 4.98 × 10⁻³ moles of calcium atoms.

You can learn more about Avogadro's number here: https://brainly.com/question/13302703

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