help chemistry mass?
How does this task work?
A radioactive radium atom with 226 nucleons, 88 protons and 88 electrons decays into a radon atom with 222 nucleons and 86 protons and a positively charged helium nucleus with 4 nucleons and 2 protons but no electrons, which is emitted. So what happened to the two electrons? Did they remain in the shell of…
No one could explain the humming noise (assuming that the electrician really found the problem and fixed it…). So there were two cables with different phases, and the spot was emitting a pretty loud humming noise. But there was no fire…
We had a chemistry question about poisons. Potassium cyanide is a white powder, but I've now read that it also comes in liquid form. (I read that some people inject it, so it's called potassium cyanide, and then it must be a liquid.) But which is the correct answer? It is also said to contain…
Hello, Could someone please explain these terms to me and what exactly the difference is? I need these terms for my chemistry presentation, but I don't really understand them. Thanks in advance
Pure methane alone burns. If a cow emits some, is it pure or concentrated enough to create a flame? Stupid question: Do cow farts burn or not?
The density ρ (= rho) is calculated according to ρ = m/V
In the solid state, substances have a greater density than in the liquid.
Reasons: Atoms and molecules are more dense in the solid state. In the liquid state, the movement of these particles is greater, and they therefore take up a larger volume.
I assume you can solve the task now.
You must say which of the two is liquid or solid wax and justify it
but how do you know?