Final answer:
The grams of carbon from a 3.87g sample, use the mass percent of carbon in the sample. Assuming a compound with a known makeup, where carbon comprises approximately 63.6% of its mass, you would obtain approximately 2.459 grams of carbon.
Step-by-step explanation:
To determine how many grams of carbon you would obtain from 3.87g of a sample, we need to know the percentage composition of carbon in that sample. However, based on the given reference information, we can take an example where we know the proportions of carbon in a molecule.
Let's use the provided molecular formula which adds up to a molar mass of 151 g/mol. This compound consists of 8 moles of carbon (12 grams/mole), 9 moles of hydrogen (1 gram/mole), 1 mole of nitrogen (14 grams/mole), and 2 moles of oxygen (16 grams/mole). The total mass of carbon in one mole of this compound is 96 grams (8 moles × 12 grams/mole).
The mass percent of carbon in this compound is calculated by (96 g of C / 151 g of compound) × 100%, which is approximately 63.6%. To find out how much carbon is in 3.87g of this compound:
3.87g sample × 0.636 (mass percent of C as decimal) = 2.459 g of Carbon
Therefore, you would obtain approximately 2.459 grams of carbon from a 3.87g sample of this hypothetical compound.