Final answer:
The value of carbon dioxide generated and collected in a chemical reaction or environmental analysis can be determined using principles of gas collection, gas laws, and stoichiometry, but specific values depend on provided experimental conditions and balanced chemical equations.
Step-by-step explanation:
The value of carbon dioxide collected after 3 and a half minutes is not provided directly, but based on the context of the exercises, we can understand how to determine the amount of carbon dioxide generated in a chemical reaction or analyze its concentration in various scientific contexts.
For example, Exercise 6.7.1 and 8.11.3 describe a scenario in which carbon dioxide is generated from the decomposition of CaCO3 and is captured in a 3.50 L container at a specific temperature and pressure. To find the number of moles of carbon dioxide, we would use the ideal gas law equation PV = nRT with the given conditions (volume, temperature, and total pressure), considering also the vapor pressure of water at the stated temperature, since the gas is collected over water.
In a different context, the mass of glucose produced from the use of 3 moles of carbon dioxide in the photosynthesis reaction is found through stoichiometry by balancing the chemical equation for photosynthesis and then using the molar mass of glucose to find the mass.
Understanding the principles of gas collection, gas laws, and stoichiometry allows us to calculate parameters such as moles of gas collected, volume changes with temperature, and mass of compounds produced or consumed in reactions, which are essential for topics related to the measurement of carbon dioxide in various scientific experiments or environmental studies.