Wet Fe(NO3)3 nonahydrate needs to be removed from any additional water, or if possible, its own water (to exactly nonahydrate, hexahydrate, or anhydrous), so that the molar mass is clear. How can this be achieved, for example, by heating it without decomposing the rest of the compound, and at what temperature? It's intended for dyeing…
Hi, Some time ago I melted aluminum in a plaster crucible. I then pulverized the crucible, heated it in the oven to 200°C to make sure there was no more dihydrate, and the week before last, I mixed it with water again and poured it into a mold. It did solidify again, but it was…
I'm currently studying water of crystallization, but there are some things I don't quite understand yet. Alkaline earth and alkali metal salts are said to be quite easy to dehydrate, but what about transition metals? I'm not sure if iron(3) nitrate nonahydrate can be easily removed by heating. I've been told it's difficult with transition…
Hi! I have a big problem with a chemistry assignment: Sketch the top view (i.e. the top “layer”) of a unit cell of α-, γ- and δ-iron, showing the atoms to scale. Also, sketch a scaled cross-section (i.e., the middle "layer") of the unit cells. Draw additional atoms outside the unit cell into your sketch…
Hey, we have to memorize three sheets of formulas. When it comes to sulfates, we keep seeing water in the formulas. Is there any way to derive this? Is there perhaps a name for it? Example Ammonium iron(II) sulfate (NH4)2Fe(SO4)2 x 6H2O and ammonium iron(III) sulfate (NH4)Fe(SO4)2 x 12H2O
Hi! A question about water of crystallization. Why is the water of crystallization released at comparatively low temperatures? Greetings 🙂