It’s time for science. You are able to calculate the molar mass for a compound using the periodic table and the amount of compound involved. You might need to know this in your everyday life but you will definitely need this in a chemistry class.
Aqua regia (königswasser in German) is a very corrosive liquid made from a mixture of nitric acid and hydrochloric acid (1:2 - 1:3). This chemical mixture is so corrosive that it can even dissolve gold, and that's what you'll learn about in this video.
In chemistry you come across problems which ask you to find the percent by mass and percent composition of each element in a chemical compound. To do this the first step is to compute the molar mass. Use the periodic table to look up the mass of individual atoms and multiply it by the number of atoms to find the mass of that element. Now add up all the masses to arrive at the molar mass of the compound. Now to find the percent composition of an element divide the total mass of each element by...
Not sure how to balance a chemical equation? According to the rules of chemistry, matter must be conserved in chemical reactions. When you balance a chemical equation, you account for all of the matter in the reaction.
This experiment is intended to introduce students to hydrated compounds. These compounds have water molecules coordinated in their chemical structures. Examples CuSO4*5H2O, BaCl2*2H2O, and NaC2H3O2*3H2O.
We've worked hard to reduce the flow of toxic chemicals into our waterways, which means no more DDT and other bad actors to pollute or destroy wildlife and our health. But one observation has been plaguing scientists for decades: Why are large quantities of one toxic chemical still found in the world's oceans?
In this video, we learn how to easily balance a chemical equation. In a balanced equation, there should be the same number of atoms on both sides of it. There are no rules that explain how you get a balanced reaction from expression. First, start on the molecule or compound that is the most atomically complex. After you look at this, you can learn how to make the rest of the equation equal to each side. This is a complex process that you must walk through to figure out, but it will result in ...
Learn how to balance chemical equations with MyTutorBuddy. Learn about this in this video tutorial. There are four easy steps to do this. Step #1 – place 1 by the most complex compound. Step #2 – balance anything that is not an element. Step #3 – balance the elements. Step #4 – multiply by the lowest common multiple. The 4th step doesn’t always come in to play. The video demonstrates with an equation: C3H8 + O2 -> H2O + CO2. But, this equation is not balanced. Using the 1st three steps, the v...
Learn how to balance the three different types of chemical equations in simple steps. First take an equation, write down its reactants and products and write down the names of all elements. Now write down how many of each element are present in the equation. Now check which element does not match, in this case the Oxygen doesn't match. Now multiply the element or compound starting at two but now hydrogen doesn't match. Try to match them by multiplying the coefficients but now sulfur doesn't m...
This video is based on a chemistry experiment. This video is going to explain to us how to use gravimetric analysis in order to analyze sulfuric acid. This experiment should not be done for those who do not have a fundamental knowledge of chemical compounds, reactions and chemical safety. He explains first what he is about to do before he does it. Sulfuric acid is acidic and can be toxic if ingested or in contact with the eyes. Take extreme care with this experiment.
Cytochrome P450 (P450s) are proteins found in nearly all living organisms, which play roles that range from producing essential compounds and hormones to metabolizing drugs and toxins. We use some of the compounds synthesized by P450 in plants as medical treatments, but the slow growth and limited supply of these plants have put the drugs' availability in jeopardy and jacked up prices.
A rose by any other name may smell as sweet, but one annoying invasive weed may hold the answer to treating the superbug MRSA. Researchers from Emory University have found that the red berries of the Brazilian peppertree contain a compound that turns off a gene vital to the drug-resistance process.
Studying chemistry is a complex but potentially lucrative activity. If you're studying ionic compounds and need some help understanding how they work, look no further. THis video will explain how the two types of ions: anions and cations, and energy combine to create an ionic compound.
Taping drywall requires a spreader or a spatula, compound and drywall tape. Spread the compound over the nails and the seams smoothly to apply tape over later. Next, the tape is applied to the wet compound on the wall directly over where the seams were. Then, another layer of compound is placed on top of the tape. After it is dry, a second layer of compound is placed on top of this layer. This process will continue until all the seams are covered with the compound, taped over the seams on top...
In this piano music theory lesson you'll go over something of a more advanced piece of music theory: compound intervals.
The presenter, Ms. Jennifer explains how compound words are formed from phrasal verbs. With examples she explains how the meaning and pronunciation differs when compound words are formed from phrasal verbs. She explains the difference between 'show' and 'show off' by showing her collection of fans, and showing off with one of her beautiful fan from Japan. Then she explains the difference between 'show off' and 'show-off', giving examples and makes the listeners clear about compound nouns also...
In the ongoing search to find better ways to use antibiotics, an extract made from maple syrup has some surprisingly important medical benefits.
Bob Harris of decorative concrete institute explains how you can remove your tiled or carpeted flooring for a concrete substitute. He suggests when your removing carpeting that it can be very heavy and advises you to hire someone who can lift and carry it out, or rent a dumpster for easy take away. He states that after the carpet is removed you'll need to remove the adhesive from the floor. You can do this by stripping or grinding, and at other times the use of harsh chemicals may be needed. ...
Organic fertilizer is based of natural occurring compounds instead of chemical based compounds. With healthy, natural soil, learn how your plants and the environment can thrive in this free gardening video series about how to use organic fertilizers on plants. The following clips illustrate:
In this video tutorial, viewers learn how to repair a small hole in the wall. The materials needed for this process are drywall tape, water, patching compound, and a drywall knife. Begin by placing the drywall tape over the hole. Then mix some water with the patching compound and apply it over the hole. Use the drywall knife to spread the compound over the hole. Start from the middle and spread out. Finish by letting the compound dry and sand it using some sand paper. This video will benefit ...
In this video the instructor talks about compound and continuous interest formula calculations. You need to understand the concepts of simple and compound interest. Only then you can understand what the bank is doing to your money which are in your bank account. Simple interest is a method where when returning a borrowed sum to some one you pay additional price for using the money all this time. Compound interest is a similar concept where you pay interest on the original sum borrowed, and al...
If you look at the label on your favorite processed snack, there's a good chance you have no idea what half the ingredients are. It's nothing new, but with natural and organic foods becoming huge trends, we're hyper-aware of all the "chemicals" we eat.
In this tutorial, we learn how to apply sharpening compound to a hone. First, remove the old compound by scratching the hone on scotch bright. Keep doing this until the compound is off and the hone is soft. To reapply, start coloring the compound on. Work your way from the top to the bottom, moving in an up and down motion quickly. Make sure you apply enough to where the hone is a darker color of green instead of a light green When you are finished, you will have newly applied compound within...
Watch this quick video showing how to mix joint compound. In a large bucket, mix a fresh bag of joint compound with water, using an electric mixer. You can mix your joint compound to be thicker, or thinner, depending on the spackling project.
Exposed to hormones, pharmaceuticals, and other chemicals, the beautiful wild fish in Canada's Grand River have taken on some pretty odd characteristics—they're turning into females. A long-term study suggests using bacteria to manage polluted water could turn the tide for feminized fish.
Watch this science video tutorial from Nurd Rage on how to make a desiccator bag for drying chemicals with Dr. Lithium.
Chemguy AKA Rob reviews the various diagrams in organic chemistry. This is a 16 part series from this Canadian high school Chemistry teacher.
This is a video tutorial in the Electronics category where you are going to learn how to calculate compound interest using a TI-84 and solver. Press the apps button on the calculator and press enter to load the TVM Solver which is the 1st choice. Here the meaning of various notations are N is time, I% is the percentage, PV is present value, PMT is payment, FV is future value and C/Y is compounding period. The problem is find the compound amount and the interest earned on $12,903.45 compounded...
In this video tutorial, viewers learn how to drywall a tape butt joint. This task is very easy, simple and fast to do. Once the tape is on the butt joint, apply a thin layer of drywall compound and then apply a second coat of compound. Scrape off any excess compound. The main goal is to apply the compound over the tape. Make sure to use the drywall knife to smooth out and spread the compound. This video will benefit those viewers who are interested in pursuing a career as in drywall or are re...
This is a great video demonstrating how to apply thermal compound to your CPU. This is useful to know in order to build your own operating system and computer.
How to tape and finish drywall
Watch this science video tutorial from Nurd Rage on how to find chemicals for science experiments with Dr. Lithium.
A gold-medal winning entry into the iGEM synthetic biology competition could change the way we look at Esherichia coli, the bacteria better known as E. coli.
Compound butters can be found at almost any supermarket or store. It's easy to use and adds a great flavor to most dishes. But, why spend your hard earned cash to buy something, when you can make it yourself. It costs less and is a fun activity to perform yourself. In this tutorial, find out how to make your own compound butter from scratch! Enjoy!
This instructional video demonstrates how to coat ceilings with joint compound, without dripping mud on your face. Spackling is a delicate art, but anyone can create a perfectly smooth surface with a metal putty knife and a fresh bucket of joint compound. Spackling ceilings is one of the more difficult tasks in prepping a room for painting, but this video provides tips on how to lay down thin layers of putty to avoid heavy sanding after the spackle dries.
This is a video demonstration on how to coat cornerbeads with join compound. Spackling is a delicate art, but anyone can create a perfectly smooth surface with a metal putty knife and a bucket of fresh joint compound. Learn how to spackle a corner in thin coats to avoid heavy sanding in the second stage of prepping a room for painting.
Here's how to spot nails and screws with joint compound. This instructional video will show you how to coat nails and screw holes in drywall with a thin layer of spackle. Use a metal putty knife and fresh joint compound to get a smooth surface of spackle and avoid heavy sanding.
Shoot a compound bow safely and accurately. Learn these great tips for shooting a compound bow in this archery video tutorial. Take action: use release for accuracy, push arrow until "click," secure everything, and use proper form. John Swindle, the instructor of this how-to video from Live Strong, is the owner of Arrowhead Archery in Tampa, Florida. He has been an archer and a bow hunter for over 18 years.
Ask the Builder host Tim Carter demonstrates how to mix drywall joint compound. From getting the right consistency to time saving mixing techniques, discover some secrets about how to prepare joint compound for your home projects.
One of the graphic features Adobe InDesign borrows from Adobe Illustrator is Compound Paths. In this episode Terry White will show you how to take advantage of Compound Paths to create an effect of looking through window panes into an image. This tip comes from Terry's team member Colin Fleming.
