If you're unable to find a free PDF, consider purchasing a copy of the book or looking into newer editions that might be available for free or at a lower cost through educational platforms. If "Química General" by Mortimer is not available for free, you might consider "Chemistry: An Atoms First Approach" by Steven S. Zumdahl or "General Chemistry" by Linus Pauling, which are also well-regarded in the field and might be accessible through the methods mentioned above. Steam Account With Phasmophobia 2021 - Free