Question

Consider the following balanced reaction. What mass (in g) of CO2 can be formed from 743 mg of O2? Assume that there is excess C3H7SH present.
C3H7SH (l) + 6 O2 (g) ---> 3 CO2 (g) + SO2 (g) + 4 H20 (g)

Answer 1

Convert 743 mg O2 to grams, then to moles. moles = gram/molar mass

Using the coefficients in the balanced equation, convert moles O2 to moles CO2,

Now convert moles CO2 to grams CO2. g = moles x molar mass.