Exercise -Hydroo ortisono is a storoid (corticosteroid)medicine, 0.75 gram Hydrocortisono (C_(21)H_(30)O_(5)) is used to produce one tube of a pharmacotical cream Calculato the number of Oxygen (O) atoms in 075 gram Hydrocortisone. M(14 yirocortisone)=362.47g/mol

To calculate the number of oxygen atoms in 0.75 grams of hydrocortisone, we need to follow these steps:1. **Determine the molar mass of hydrocortisone (C H O )**: - Carbon (C): 21 atoms × 12.01 g/mol = 252.21 g/mol - Hydrogen (H): 30 atoms × 1.008 g/mol30.24 g/mol - Oxygen (O): 5 atoms × 16 g/mol = 80.00 g/mol Total molar mass = 252.21 g/mol + 30.24 g/mol + 80.00 g/mol = 362.45 g/mol2. **Calculate the number of moles of hydrocortisone in 0.75 grams**: 3. **Determine the number of oxygen atoms in the calculated moles**: - Each mole of hydrocortisone contains 5 moles of oxygen atoms. 4. **Convert the moles of oxygen atoms to the number of oxygen atoms**: - Use Avogadro's number (6.022 × 10 atoms/mol) to find the number of oxygen atoms. Therefore, there are approximately oxygen atoms in 0.75 grams of hydrocortisone.