Chemistry 3-9-21 Percent Yield HW Review

CHEMISTRY: Great job today! Have you figure out the path for working percent yield problems? Be careful to remember that percent yield is all about product. The masses in the formula will be from products. The masses of the reactants will only be used to find the mass of the product.

Here’s our look at #25 from the percent yield homework. God bless you as you study for your test!


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Chemistry 3-8-21 Percent Yield

CHEMISTRY: So are you a cookie dough lover? Not me – I like my cookies crispy!

Here’s the last of the applications of stoichiometry problems – percent yield. First though, a look at the homework with limiting reactants. I spliced in homework review from a couple classes, so that’s making the vodcast kind of long. If you don’t need the homework review, you can fast forward to get the to percent yield lecture. You realize what we’ve done… we’ve finished the chapter!!

HOMEWORK UPDATE: Homework for Monday night is changed. Instead of the work on the syllabus, do these: Pg. R112-R113, #217a, 223a, 224a, 225a & b


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Chemistry 3-5-21 Limiting Reactants

CHEMISTRY: So if you have 11 roller wheels, how many roller blade skates can you make? You know, really, limiting reactant is almost that simple. Well, the concept is anyway! You deal with limiting reactants in your life all the time. Now we’re just applying that same concept with chemical reactions! 🙂

Here’s the lesson from Friday – first a look at a few of the stoichiometry problems. Then – limiting reactants.


flickr photo by muffytyrone

  • Hon Chemistry 3-5-21 Wave Properties of Light

    HON CHEMISTRY: Isn’t this a super cool picture of light? So tell me again, if we’re supposed to be figuring out electrons, why are we studying waves?

    I’m thinking you’ve probably memorized the electromagnetic spectrum after that inspirational song; however, also sure you also know the uses of the different types (all except for long waves). Just in case you’d like to hear it again: Electromagnetic Spectrum Song

    How’d you like the light problems so far? Let’s play with light on Monday!


    flickr photo by kevin dooley

    Chemistry 3-3-21 Stoichiometry Homework Review

    CHEMISTRY: So how did you do with the stoichiometry problems on your own? Do you find that working these problem is kind of like following a map – and making sure you have the right passport before you try to get in to the next country?!

    Good job today! Here’s our look at some of the problems from homework last night. Be sure and get the answers at the beginning so you can go back and work these problems and more to practice for the test!


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    Physics 3-2-21 Bernoulli

    PHYSICS: Were you amazed at the effect of change in surface area on the velocity of water, and especially the pressure of water, flowing through a tube? Thaaaaat explains how a calm ride on a lazy river can turn crazy in just a few seconds!

    Today we concentrated on quantitative applications of Bernoulli’s Principle and a few practical applications. Tomorrow we’ll take a look at the problems and a couple more cool ways to apply Bernoulli!!

    Chemistry 3-2-21 Stoichiometry

    CHEMISTRY: Wow!! Great job today with stoichiometry!! Now it’s time to put everything you’ve learned from the last few chapters together. It’s like cooking – figuring out what you need to get what you want. Slightly different ingredients, though. Don’t forget molar mass and mole ratio!


    Photo by Monika Grabkowska on Unsplash

    Hon Chemistry 3-1-21 Applications of Radioactivity, Pt. 2 and Fission & Fusion

    HON CHEMISTRY: Hey guys! Here’s the laaaaast of the chapter. I found an old vodcast that combined the notes from Friday and today and have posted it below for your review. How are you studying? Be careful and don’t take the test for granted! And don’t forget to check out the the Chapter 21 Stuff to Know & sheet.

    Make sure you keep practicing half-life problems and nuclear equations. Also, make sure you’ve memorize the nuclear symbols for alpha particles, beta particles, positrons, neutrons, and protons. And then there are tons of notes on the conceptual stuff. Properties of radioactivity, people, types of radioactive decay, applications of radioactivity, definitions, definitions, and definitions!

    FYI – This is a pic of a test used to check on blood flow through the heart during a stress test. Fun, huh!?

    So what’s this about you probably having an radioactive isotope in your house?!? Don’t forget to research how smoke detectors, especially those with Americium, work!


    Image source http://www.cedars-sinai.edu