Please help with this question:
B) Combustion analysis of a 22.0-mg sample of the painkiller morphine produced 13.2 mg of water. What is the % by mass of hydrogen in morphine?
Why did the painkiller go to the therapist? Because it had some serious issues with H2O! Now, let's find out the percentage of hydrogen in morphine.
To do this, we need to determine the mass of hydrogen in the sample and divide it by the mass of the entire sample, then multiply the result by 100.
So, the mass of hydrogen in the sample is 13.2 mg. To find the percentage, we divide this by the mass of the sample (22.0 mg) and then multiply by 100.
(13.2 mg / 22.0 mg) * 100 = 60%
Therefore, the % by mass of hydrogen in morphine is approximately 60%. Hope that answers your question!
To determine the percentage by mass of hydrogen in morphine, we need to calculate the mass of hydrogen in the 22.0-mg sample of morphine and then express it as a percentage of the sample mass.
First, we need to find the mass of hydrogen produced from the combustion analysis. Since we know that 13.2 mg of water is produced, we can use the chemical formula of water (H2O) to determine the amount of hydrogen.
1 molecule of water (H2O) contains 2 hydrogen atoms:
1 mol of H2O → 2 mol of H
So, we can set up a simple ratio to find the number of moles of hydrogen produced:
2 mol H / 1 mol H2O
Next, we need to convert the moles of hydrogen to grams. The molar mass of hydrogen is approximately 1 g/mol.
So, the mass of hydrogen (in grams) can be calculated as:
Mass of H = Moles of H × Molar mass of H
Now, we have the mass of hydrogen produced in grams from the combustion analysis. To find the percentage by mass of hydrogen in morphine, we can divide the mass of hydrogen by the mass of the morphine sample and then multiply by 100%.
Percentage by mass of hydrogen = (Mass of hydrogen / Mass of morphine sample) × 100%
Plugging in the respective values:
Mass of hydrogen = Mass of water produced = 13.2 mg
Mass of morphine sample = 22.0 mg
Now we can calculate:
Mass of hydrogen (in grams) = 13.2 mg × (1 g / 1000 mg) = 0.0132 g
Percentage by mass of hydrogen = (0.0132 g / 22.0 mg) × 100% = 0.264%
Therefore, the percentage by mass of hydrogen in morphine is approximately 0.264%.