Examine the following unbalanced equation.

1 answer:

7 0

1) Determine the number of moles of chlorine gas

At STP 1 mol = 22.4 liter

=> [1mol/22.4 liter] * 0.050 liter = 0.00223 mol Cl2 (g)

2) Write the balanced equation

<span>4HCl (g) + O2 --> 2Cl2 (g) + 2H2O (g)

3) Write the ratios of the compound on which you are focused.

4 HCl : 2 mol Cl2

Then, 0.00223 mol Cl2 * [4mol HCl / 2 mol Cl2] = 0.00446 mol HCl

5) Use Avogadro's number to find the number of molecules:

0.00446 mol * 6.02*10^23 = 2.68 * 10^21 molecules of HCl

Answer: 2.68 * 10^21 molecules
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