# 12.00 moles of NaClO3 will produce how many grams of O2? 2 NaClO3 ---> 2 NaCl + 3 O2

##### 2 Answers

How many grams of

We begin with a balanced chemical equation that is provided in the question.

Next we determine what we have and what we want.

We have 12.00 moles of

We set up a roadmap to solve the problem

We need the molar mass (

We need the mole ratio between

Now we set up conversion factors following the roadmap from above.

Unit we want in the numerator, unit to cancel in the denominator.

Multiply the numerators, and divide the denominators.

The outcome is

will be produced from 12.00 moles

I hope this was helpful.

SMARTER TEACHER

The number of moles for NaClO3 = 12 moles

The number of moles for O2 = 18 moles

Molar mass of O2 = 32 g/mol

Final Answer (mass of O2) = PLEASE SEE BELOW!!!

#### Explanation:

If 2 moles of NaClO3 gives you 3 moles of O2,

it's because the mole ratio between NaClO3 : O2 is 2 : 3.

Then 12 moles of NaClO3 must give you [12 รท 2 then

You have found the number of moles (n) for O2.

Note that number of moles (n) = mass of substance (m)

The next step is to find out what is the molar mass (M) of O2.

If you look into your periodic table, the atomic weight is equivalent to the molar mass.

The molar mass of one O is = 16 g/mol.

Since there are two O present in the reaction (refer to equation), the molar mass of O2 is [16 g/mol

You've now found the molar mass (M).

The final step is to find out the mass (m) of O2. Since you found the number of moles (n) and molar mass (M), you can now find out the mass of substance.

Looking back at the formula

The mass of O2 is [18 moles

Overall, 12 moles of NaClO3 will produce 576 grams of O2.