C3H8+5O2->3CO2+4H2O. Find mass of c3h8,o2,h2o if mass of co2 is 2.2gms
moleCO2=2.2/44=.05
so you should have
1/3 * .05 mole of propane
5/3 * .05 mole of O2
4/3 * .05 mole of water.
I assume you can convert those to grams.
To find the masses of C3H8, O2, and H2O, we need to use the balanced equation and the given information about the mass of CO2.
Let's start by calculating the molar mass of CO2, which is 44.01 g/mol (molar mass of carbon: 12.01 g/mol x 1, molar mass of oxygen: 16.00 g/mol x 2).
Now, comparing the coefficients of CO2 and C3H8 in the balanced equation, we can see that 3 moles of CO2 are produced from 1 mole of C3H8. Therefore, the molar mass of C3H8 can be calculated as follows:
Molar mass of C3H8 = (Molar mass of CO2) / 3
= 44.01 g/mol / 3
= 14.67 g/mol
Hence, the molar mass of C3H8 is 14.67 g/mol.
Next, let's calculate the mass of C3H8 using the molar mass:
Mass of C3H8 = (Mass of CO2) x (Molar mass of C3H8) / (Molar mass of CO2)
= 2.2 g x 14.67 g/mol / 44.01 g/mol
= 0.733 g
Therefore, the mass of C3H8 is 0.733 grams.
Now, using the stoichiometric ratio from the balanced equation, we can calculate the masses of O2 and H2O.
From the equation, we can see that 5 moles of O2 are required to produce 3 moles of CO2. Thus, the molar mass of O2 can be calculated:
Molar mass of O2 = (Molar mass of CO2) x (Number of moles of O2) / (Number of moles of CO2)
= 44.01 g/mol x 5 / 3
= 73.35 g/mol
Hence, the molar mass of O2 is 73.35 g/mol.
Using the molar mass of O2, we can now determine the mass of O2:
Mass of O2 = (Mass of CO2) x (Molar mass of O2) / (Molar mass of CO2)
= 2.2 g x 73.35 g/mol / 44.01 g/mol
= 3.67 g
Therefore, the mass of O2 is 3.67 grams.
Finally, using the stoichiometric ratio, we can calculate the mass of H2O. From the equation, we can see that 4 moles of H2O are produced from 3 moles of CO2. Thus, the molar mass of H2O can be calculated:
Molar mass of H2O = (Molar mass of CO2) x (Number of moles of H2O) / (Number of moles of CO2)
= 44.01 g/mol x 4 / 3
= 58.68 g/mol
Hence, the molar mass of H2O is 58.68 g/mol.
Using the molar mass of H2O, we can determine the mass of H2O:
Mass of H2O = (Mass of CO2) x (Molar mass of H2O) / (Molar mass of CO2)
= 2.2 g x 58.68 g/mol / 44.01 g/mol
= 2.93 g
Therefore, the mass of H2O is 2.93 grams.