Final answer:
The request for calculating carbohydrates consumed by Marcella is incomplete without the total amount of carbohydrates. For the photosynthesis question, 3 moles of CO2 would produce half a mole of glucose, which translates to approximately 90 grams.
Step-by-step explanation:
The student is asking about the calculation of macronutrients, specifically carbohydrates, which relate to chemistry and health. One request involves finding how many carbohydrates Marcella consumed, which would be a simple division if the total amount of carbohydrates and the number of servings or portions were known. However, without more context or additional data, this task is incomplete. We need the total amount of carbohydrates Marcella has consumed in order to carry out the division.
In another part of the question, we're discussing the photosynthesis reaction and the production of glucose. This involves calculating moles of glucose produced from carbon dioxide. Knowing that 6 molecules of carbon dioxide produce one molecule of glucose (C6H12O6), we can use stoichiometry to determine the mass of glucose produced from 3 moles of carbon dioxide.
For example, calculating the moles of glucose produced in photosynthesis: 6 CO2 + 6 H2O -> C6H12O6 + 6 O2. Since 6 moles of CO2 generate 1 mole of glucose, then 3 moles of CO2 would produce half a mole of glucose. Glucose has a molar mass of approximately 180 grams per mole, so half a mole would weigh about 90 grams.