How many moles of potassium Chlorate would decompose on heating to give 60cm^3 of oxygen at 25 degrees Celsius and 1atm?
1 Answer
The mass of
Explanation:
There are four steps involved in this stoichiometry problem:
- Write the balanced chemical equation
- Calculate the moles of
#"O"_2# - Calculate the moles of
#"KClO"_3# - Calculate the mass of
#"KClO"_3#
Step 1. Write the balanced chemical equation.
Step 2. Calculate the moles of
For this calculation, we can use Ideal Gas Law:
#color(blue)(barul|stackrel(" ")( pV = nRT)|)#
We can rearrange this formula to give
#n = (pV)/(RT)#
Step 3. Calculate the moles of
Step 4. Calculate the mass of
Note: The answer can have only one significant figure because that is all you gave for the pressure.
Here's a useful video on volume-mass conversions.