Final answer:
There are 156 grams of oxygen in 450 g of N2O4. To calculate the number of grams of oxygen in 450 g of N2O4, you need to find the molar mass of N2O4 and then use stoichiometry to determine the number of moles of oxygen. Finally, convert the number of moles of oxygen to grams using the molar mass of oxygen.
Step-by-step explanation:
To calculate the number of grams of oxygen in 450 g of N2O4, you need to find the molar mass of N2O4 and then use stoichiometry to determine the number of moles of oxygen.
The molar mass of N2O4 is 92.02 g/mol, which means that one mole of N2O4 contains two moles of oxygen.
First, calculate the number of moles of N2O4 in 450 g using the formula:
(450 g N2O4) / (92.02 g/mol) = 4.89 mol N2O4
Since each mole of N2O4 contains two moles of oxygen, multiply the number of moles of N2O4 by 2 to find the number of moles of oxygen:
4.89 mol N2O4 * 2 mol O/mol N2O4 = 9.78 mol O
Finally, convert the number of moles of oxygen to grams using the molar mass of oxygen:
9.78 mol O * 16.0 g/mol = 156 g O
Therefore, there are 156 grams of oxygen in 450 g of N2O4.