Chemistry 11-30-23 Moles, Mass, Atoms & Avogadro

CHEMISTRY: So… how big a bucket do you think we’d need to hold a mole of frogs? 🙂

Nope, not the furry brown creature that burrows underground, it’s a whole different thing! Here’s our discussion from Thursday on moles, mass, and Avogadro’s number. I still say he has a cool name… 🙂

HOMEWORK INFO: Do all the parts on the homework except only do b & c on the problems.


flickr photo by Thomas Hawk

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35 thoughts on “Chemistry 11-30-23 Moles, Mass, Atoms & Avogadro

  1. Researchers have discovered a new planet that has “clouds and rain of sand”. They say it has a temperature of 480 degrees C (880 degrees F). This planet is known as WASP-107b. They have detected silicate clouds in the atmosphere from the use of James Webb space telescope. The researchers were surprised to find sulfur dioxide (SO2) but no methane (CH4). Scientist are still trying to find out why WASP-107b has such low density with these conditions.

    https://sitn.hms.harvard.edu/flash/2023/welcome-to-the-planet-with-clouds-made-of-sand/

  2. Anesthesiologists have a really difficult job. For instance, they have to make sure patients under surgery get the right amount of anesthesia to ensure they don’t wake up. A new device monitored rhesus macaques’ brain activity and supplied a common anesthetic called propofol in doses that were automatically adjusted every twenty seconds. The system requires limited human input, which combines brain monitoring medical equipment with a computer that uses algorithms to determine how the body processes propofol. Every 20 seconds the machine calculates how much drug is needed to maintain a preset level of brain activity that past work has shown.

    https://www.sciencenews.org/article/brain-automated-device-anesthesia-dose

  3. A woman suffered from abdominal pain, night sweats, and dry cough. Doctors found damaged spots in her organs but couldn’t find the cause. Her condition worsened, and moving spots were found in her lungs. She showed signs of forgetfulness and depression. An MRI revealed a glow in her brain, and a biopsy identified a snake roundworm. This is the first known human case, underlining the risk of infections from wild animals.
    https://www.snexplores.org/article/snake-parasite-woman-brain-worm-infection

  4. For the first time in history, astronomers captured true evidence of a rare double cosmic cannibalism. A cosmic cannibalism is a star swallowing a compact object such as a black hole or a neutron star. This happened on September 3, 2017 when they discovered some clues about a burst of radio energy as bright as the brightest exploding star, a supernova. Far away, they discovered that object gobbled the star’s core, causing it to explode and leave behind only a black hole. https://www.sciencenews.org/article/astronomy-star-swallow-black-hole-supernova-cosmology

  5. Scientists believe that bottled nosed dolphins can sense weak electric pulses of their prey. The scientists now created a theory that before birth they had whiskers as vestigial structures. This ability from these dolphins create the extra precision to strike their target and now scientists believe that other species of dolphins have more advanced features of this sense. There is a lot more to dolphins we still have figured out yet. https://www.sciencenews.org/article/bottlenosed-dolphins-sense-electric-fields-hunt-prey

  6. The United Nations has released a report addressing the ethical considerations of using technology to combat global warming, emphasizing the need for a global consensus on climate engineering. The report proposes ethical frameworks for studying and deploying climate engineering strategies, highlighting concerns about unintended consequences and conflicting interests.

    https://www.sciencenews.org/article/climate-engineering-un-report-ethical-framework

  7. Scientists plan to make technology from trees. They will store and generate energy and will include materials such as cellulose and lignen.

  8. Scientists have recently discovered more about the phenomenon of plants being able to sense danger coming. Young corn plans especially “smell” danger coming and release a chemical to combat the threat. The scientists tested how much chemical the plants released by introducing them to a scent similar to freshly cut grass, which often means the plants could be in danger.

    https://www.snexplores.org/article/young-corn-leaves-smell-danger-plants-chemistry

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