Coronaviruses are common viruses, and most of us catch one at some point — they cause about 30% of all common colds. A new accidental discovery could help fight these viruses, even the deadlier, emerging ones.
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...
In this Home & Garden video tutorial you will learn how to make a concrete counter top mold. Fu Tung Cheng from Concrete Network presents this video. For making different edges on your counter top, a compound called polyurethane is used for making the mold. It is a two part compound mixed together to form a rubbery substance. While using polyurethane follow the manufacturer’s recommended dosage, time, proportion and also use the recommended release agent. Take a piece of the molding wood and ...
This video shows the viewer how to use paper tape to cover the joint between panels on a dry wall. The creator of the video does this using a 6-inch dry wall knife and a curved trowel. He first applies standard compound to the joint using the trowel. The compound should be applied evenly and the thickness shown is said to be around 1/8 inch. After applying the compound he then gently presses the tape over the joint. He then smoothes the tape on the wall, using a dry wall knife. While doing th...
Watch this instructional video on how to coat butt joints with joint compound. Spackling is a delicate art, but anyone can create a perfectly smooth surface with a metal putty knife and a fresh bucket of spackle. Rock the putty knife back and forth to coat a butt joint with joint compound. Once you are ready, try out to bonus trick for spackling masters.
Here's a way to make your drywall project perfect. Mix up some thin joint compound, using more water than normally required for spackling holes in the wall. You can roll the putty onto the wall with a think rolling brush. After the joint compound dries, it only requires a light sanding. Watch this instructional video to create perfectly smooth drywall surfaces with liquid spackle.
In this video, we learn how to install dry acoustic flooring with Fermacell. To start, you will level the floor and apply compound if you need. Next, you will lay the Fermacell around the room on top of the leveling compound. Push the flooring tightly together so there are no spaces in between them. You may need to cut the flooring to make sure it's the correct shape for the wall. After this, apply flooring adhesive to the seams to make sure they are secure as they are laid down. After this, ...
In order to clean and restore your headlights, you will need the following materials: razor blades, tape, liquid rubbing compound, and a power polisher.
Two college students; Kevin Martin and Joey Smokey introduce the concept of Molar Mass. They start of by explaining what molar mass is, which is the relationship of a mole and a gram, it totals up the weight(in g)of a molecule. An example: say you have this compound, Sodium phosphate (Na3PO4). You know you have three sodium atoms, one phosphorus atom, and four oxygen atoms. You basically find the weight of each atom, if you have three sodium atoms, you multiply it's atomic mass by 3 (the numb...
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.
In this tutorial, we learn how to make verdigris with copper and vinegar. Verdigris is a compound of copper that is blue and powder. You will need: copper metal, vinegar, a big jug, and a small beaker. Now, place the small beaker inside of the jar, then fill the bottom with vinegar. Next, put the piece of copper metal inside of the jar making sure it sits inside the small beaker. Seal this and put it in a safe and dry place. Leave it for a good month, then when you come back you will have a n...
We've all come up with lame excuses for not working out: Gym memberships can get really pricey, you don't have enough room in your living room to follow a workout tape, you're too tired, etc. But have you ever considered simply hitting up your local high school track field?
Final Touch TV shows viewers how to remove scratches from the car with wet sanding. This is for fine scratches that may be on your vehicle. First, you need to use 3,000 grit sand paper with a block and scuff up the clear coat first with this. You should dip your block in some soap and water in and up and down motion. You need to make sure you do not go all the way through the paint. Most scratches are on the clear unless it appears deep. Now, take a 3 compound, spray it on and rub it in. Next...
Chuck Miller gives us a great tip for patching a small hole in drywall, such as a hole from an outlet box.
Watch to learn how to make thermite, a compound used to weld railroad tracks together, out of magnesium, iron oxide, and aluminum powder,
The video is a description of how to refurbish a brass door frame, and door knob that has gone dull due to the lacquer. Purchase lacquer and metal polish at a hardware store. Before beginning work, remove the circulate at the back of the door knob with circulate pliers. Take the component parts of the door knob apart and set the spring and clip aside to be replaced later. Take a clean cloth and put metal polish on it. Using the cloth, polish the knob. It may take a while to get all the grime ...
Want to test whether the soil sample or a water sample contains boron, watch this video. As shown in the video, the first step is to create test specimens of various concentrations using a simple turmeric and ethanol solution as a base for comparison. The basis of this experiment is the fact that curumin present in turmeric reacts with boron to form a reddish compound and so the result of this reaction can easily be verified visually.
In this tutorial, we learn how to repair cracks and holes in drywall with Lowe's. Drywall can be damaged in a number of ways, but can be fixed easily. If you have a medium size hole in the wall, first place caulking on it and then smooth it out. If you have a larger area, you will need to use a sanding strip around it to smooth out the area and all around it. Use drywall compound to fill in the area that is empty. Then, smooth over it with a flat tool then paint over it with the same color pa...
Getting your tenderloin steak trimmed at the butcher is what most of us do when we're craving steak for the night, but why spend the extra bucks when you can trim that tenderloin at home?
This After Effects user's guide takes you from nothing to a finished broadcast slate in 24 minutes? Yes. Along the way, you'll learn about compound blur, shape layers, repeaters and more. Sounds like fun right? Then come on down! Whether you're new to Adobe's popular motion graphics and compositing software or a seasoned video professional just looking to better acquaint yourself with the program and its various features and filters, you're sure to be well served by this video tutorial. For m...
Check out this walkthrough of Killzone 2 : Take Visari's compound and eliminate General Radec. Machinima.com presents their video game cheat series: Killzone 2 Walkthrus. Machinima.com is the premier online entertainment network showing trailers, gameplay, montages & original series created in video games. This is their walkthrough / walkthru of hit game Killzone 2.
Love kalamata olives? Love butter? Are you thinking what I'm thinking? In this cooking lesson from chef Jason Hill, you'll learn how to prepare a simple kalamata olive butter spread perfect for entertaining.
Everything Must Go: It's the truth. It's time to say goodbye to everything. See Antonio again and be ready for a quick time event during the cut scene after you accept the mission. The first order of business is to kill five archers surrounding the building in which Emilio is camping. Take to the rooftops and locate the guards. Once you've gotten near them, you can't let them get too far away from you. Kill all of 'em, being as stealthy or as brazen as you like. Personally, we like brazen.
Have a Playstation game, or any other disc, that just won't play? In this how-to video, you'll learn how to repair damaged and scratched optical media (e.g., DVDs & CDs) using sandpaper and rubbing compound. Check it out.
This instructional painting video demonstrates how to prep and paint a room. First, go through the room and spackle any holes or dents in the wall. Sand it down after the joint compound dries. Paint the ceilings first. Follow these step by step instructions to paint a room; trim, window sills and all.
Take a look at how to successfully repair a hole in a drywall. This video how to video demonstrates how to use a utility knife and a drywall compound to seal it all up. You wont have to call a repair guy to patch any holes in your walls.
This is a tutorial video about compound circles (aka flowers) and freedom of expression. Hopefully you'll get some great tips on new ways to move your arms in conjunction with your poi. There is a quirky intro you may want to skip to get right to the instructional.
In this automotive repair video, you'll learn how to change your own brakes. Throughout this process, you'll also figure out how to remove your tire, calipers and brake pads, and how to clean the brake pad area. See how to take off the rotor and reinsert everything correctly. It's an easy process, and you don't need to be a professional mechanic to install new brake pads.
In Boca Al Lupo: The end is almost here. This is the last mission you will need to complete. Talk to Mario and he'll send you on your final mission, to assassinate Rodrigo Boriga in the Vatican in Rome. The mission is more linear than any other you've done up to this point, and it requires much stealthiness. But at first, it requires you break into the Vatican. Climb the wall to the west and use the beams sticking out from the wall to jump to a hanging platform to the south.
Learn how to relieve constipation naturally. When ya gotta go, ya gotta go. But what if you can't? Unburden yourself with these tried and true natural remedies, which really get things moving.
How to patch a hole in drywall / plasterboard / Sheetrock. Everyone at some stage in their life will need to patch a hole in drywall / plasterboard / sheetrock. Instead of doing some dodgy patchwork, watch this video to see how simple the job is. The steps are as follow in point form. This method is particularly suitable for holes that are larger than about 100mm or 4 inch's in size.
Unless you're a high-schooler building a nuclear fusion reactor, the hardest part of a science investigatory project often is coming up with a good idea. You want it to be cool yet feasible, novel but still useful.
In this video, we learn how to strop on a stropping block. There are two layers to the strop and they measure different lengths. On the bottom you should put two mouse pads to make sure it stays put. Now, charge the strop with a stropping compound and rubbing it against the grain until it flakes off. Next, gauge the angle of your knife and place the blade against the strop. Push against the edge of the blade and work from the top to the bottom in a long and slow arch. This is all there is to ...
In this tutorial, we learn how to build a gaming PC at home. First, grab your processor and place it into the socket of the motherboard. Lock it into place, then apply compound on top, rubbing it in evenly. Next, install the heat sensor, which will keep the processor cool. after this, install the RAM into the correct slots. After this, insert the motherboard inside the case, matching it to the slots in the case. Use a screwdriver to screw it in, then install the cases. Install the hard drive,...
In this tutorial, we learn how to hang drywall in your own home. Hanging your own drywall will save you a lot of money, but it takes a lot of time. You will first need to start on the ceiling and then secure the drywall with screws. You will have to use a saw to make boxes for electrical boxes. When finished hanging the walls, you will need to apply compound to the walls and then paint over it when you are finished. Hanging your own drywall can save you tens of thousands of dollars over profe...
In this how to video, you will learn how to clean your plastic headlights. This is important if you cannot afford to replace the headlights of your classic or semi-classic car. Toothpaste works great as a rubbing compound to fix this. First, take a rag and rub the toothpaste into the headlights. Next, take the paste off with another rag. Use some water to aid you in this. Now, your once clouded lens will be fairly clear. You can then move on to the other side to finish the whole car. This vid...
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. ...
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 teaches the secrets to sharpen a convex wood carving knife in simple steps. First find out how dull your knife is by cutting a paper or shaving hair on you hands. Now take a sand paper attached to a pad and start sharpening the ends by applying less pressure. Now try the sharpness of the knife, it will be better. Now take a double sided strop with sharpening compound and start rubbing the knife edge. After sharpening try the knife again, it should be good enough.
Cut out the core of the onion - where the root comes out. This is the section that has the most tear-inducing properties. Soak the onion in water before cutting - water will dilute the sulphuric compounds -or else, freeze the onion before cutting. The sulphuric compound that leads to tears will not react as quickly when it's cold. However, don't freeze it for too long because it can affect taste. 10 minutes should do it. Cut the onion in a well-ventilated room. Give the fumes a chance to esca...
