Fluorine and Gold - Chemistry - Science Forums
2006年1月27日 · The reason why aqua regia is able to dissolve gold is because while the nitric acid portion of it oxidizes the gold, the chloride ion is able to move in and stabilize the gold ion …
Different type of Aqua Regia - Applied Chemistry - Science Forums
2011年10月5日 · Action of Iodine on Gold. At ordinary temperatures pure dry iodine is without action on gold ; between 50° C. and the melting point of iodine combination takes place with …
Gold anode seems to dissolve in sodium hydroxide electrolyte
2018年7月22日 · Doing some tests using a gold electrode to split water. Basically I'd like to know if you'd expect what I'm seeing, which is a brown gunk building up on the gold anode and it …
So, you like to collect elements? - Chemistry - Science Forums
2004年10月19日 · Very nice. I've been collecting elements for a while now, and I have a sample of every non-radioactive element except fluorine. (For that I have some fluoride salts). I even …
NaF (aq) + HCl (aq) --> ? - Chemistry - Science Forums
2006年3月29日 · Okay, so this equation appeared on my last chemistry test. I wrote the following: NaF(aq) + HCl(aq) --> HF + NaCl(aq) Apparently my answer was correct except that I didn't …
Is it possible to ''dissolve'' quartz? - Science Forums
2016年5月24日 · Water will do. It needs to be hot and under pressure. But that's the way they grow quartz crystals for watches and such.
Soldering iron tip... - Applied Chemistry - Science Forums
2024年8月17日 · With the new tip made with 1mm thick gold clad; turned the heat on for the iron. When applying the tin solder to the hot tip, (tinning) the gold ẃashed away, disappeared, …
Dissolving mica flakes - Applied Chemistry - Science Forums
2007年9月13日 · The more gold there is the stiffer the mercury becomes. Once you have all the gold gathered, pan or suck off the sands (or use a magnet in a plastic baggie to retrieve black …
Why is white gold a mixture and not a compound?
2007年2月4日 · For a mixture like white gold the components can be present in (more or less) any proportions. Also, in compounds (even those where the ratios are not constant- the so called …
HW help - Homework Help - Science Forums
2007年1月11日 · 19. To change mercury into gold, a pair of protons must be . A. Added to the mercury nucleus. B. Removed from the mercury nucleus* C. Both of these. D. Neither of these …