Cytosine, a constituent of deoxyribonucleic acid (DNA), can be represented by the following molecular model. If 0.001 mol of cytosine is submitted to combustion analysis, how many moles of CO2 and how many moles of H2O would be formed? (Gray = C, red = O, blue = N, ivory = H.)

Video transcript

Hey everyone, the structure of loosen an amino acid is shown below a 0.02 mol sample of loosen undergoes combustion analysis, calculate the moles of carbon dioxide and water formed first. Let's go ahead and determine the formula of loosen. Looking at our structure, we can see that we have six of carbon, 13 of hydrogen, one of nitrogen and two of oxygen. So this is going to be the formula of loosen. Now that we know this, let's go ahead and calculate the moles of carbon dioxide and water. Starting off with carbon dioxide. We're going to start with 0.02 mol of our Lucy. Looking at our multiple ratios, we see that one mole of loosen Contains six mole of carbon. And looking at our multiple ratios between carbon dioxide and carbon, we know that one mole of carbon Is in one mole of carbon dioxide. And when we calculate this out and cancel out our units, we end up with a value of 0.12 mol carbon dioxide. Now, let's go ahead and calculate for water, starting again with 0.02 mol of our loosen. We're going to use our dimensional analysis And per one mole of our losing, We have 13 mole of our hydrogen. Looking at our multiple ratios between our hydrogen and our water, we see that there are two moles of hydrogen Per one mole of water. So when we calculate this out and cancel out our units, we end up with a value of 0.13 mol water and these are going to be our final answers Now, I hope that made sense and let us know if you have any questions.