If you type those chemical formulas into Google, the names of the chemicals should show up in your native language. But what it also means is that the element copper will react with silver nitrate solution and the reaction will produce elemental silver and copper II nitrate solution. I hope that helps!

@@MrLundScience Yeah kinda

@@mahamadsahid2591 Im a bit late but also more in a chemically explanation the numbers are describing how many (moles) is used. Mole is called n M is weight gram per mole, it’s the same as u. So oxygen has a weight of 16u or in M 16g/mole. m is mass. n=m/M So the reaction 1 mole copper + 2 mole silver nitrate == 2 mole silver + 1 mole copper nitrate. If you calculate you end up with exactly as much on both sides. Cu has a weight of 63.5 g/mole Ag has a weight of 107.8 g/mole AgNO3 has a weight of 169.8 g/mole Cu(NO3)2 has a weight of 187.6 g/mole So if we have 5 gram cu 5 g cu = 0.07874 mole, n=5/63,5 We get 0.07874*2= 0.1574 mole silver and need same amount silver nitrate. Remember just because mole is the same same doesn’t mean it’s equally mass, first we need to convert back. With m=n*M So from 5 gram copper + silver nitrate we get 107.8*0.1574 = 16.9 gram silver. We need 169.8*0.1574 = 26.72 gram silver nitrate. And we also get 187.6*0.07874 = 14.77 gram copper nitrate, cause we get one mole we only multiple it with same as copper mole, or half silver/ silver nitrate mole. If you now add 5g+26.7 it equals other reaction side 14.7 + 16.9 or roughly equals, cause I did some shortenings in my calculations. Remember these are lab calculations, in a perfect scenario, usually a reaction has some shortfalls and not all substances react.

You can use silver nitrate solution. That is the solution that is used in this video. The penny is reusable in the sense that as long as there's still copper to react (and still silver nitrate solution to react), the reaction will take place.

Mercury is able to dissolve many metals into itself, which is called "amalgamation". It's causing mercury to allow with whatever other metal it amalgamates with, and can do this with aluminum. Gallium, a much safer metal to work with can do this to aluminum as well. What's interesting is that the gallium as a solid will still be able to dissolve into it the aluminum solid. It's a cool, non-toxic, solid metal that can "eat" through aluminum! (Hmmm...perhaps that's a future video...)

MrLundScience kzfaq.info/get/bejne/f9iUjNiWp5_UiWg.html heres the video.