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anygoal [31]
2 years ago
12

How many moles are in 3.57 x 10 32 particles Ca?

Chemistry
1 answer:
valentina_108 [34]2 years ago
8 0

Answer:

\boxed {\boxed {\sf 592,826,303.6 \ moles \ of \ Ca }}

Explanation:

To convert from moles to particles, we must Avogadro's Number.

6.022*10^{23}

This number tells us the number of particles (atoms, ions, molecules, etc.) in 1 mole of a substance. In this case, it is the particles of calcium in 1 mole of calcium.

6.022*10^{23} \ particles \ Ca / mole \ Ca

We can use Avogadro's Number as a ratio or fraction.

\frac{6.022 *10^{23} \ particles \ Ca}{1 \ mol \ Ca}

Multiply this by the given number of particles (3.57*10³²).

3.57*10^{32} \ particles \ Ca*\frac{6.022 *10^{23} \ particles \ Ca}{1 \ mol \ Ca}

Flip the fraction so the particles of calcium will cancel out.

3.57*10^{32} \ particles \ Ca*\frac{1 \ mol \ Ca}{6.022 *10^{23} \ particles \ Ca}

3.57*10^{32} *\frac{1 \ mol \ Ca}{6.022 *10^{23} }

\frac{3.57*10^{32} \ mol \ Ca}{6.022 *10^{23} }

592826303.6 \ mol \ Ca

There are <u>592,826,303.6 moles</u> of calcium in 3.57*10³² particles of calcium.

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