assuming all the iron burnt? realistically I doubt everything got oxidised but if it did you could just use molar mass the difference in mass is the mass of oxygen through 4 Fe + 3 O2 -> 2 Fe2O3 and via iron and oxygen's molar mass you can find how much iron reacted and, if everything reacted that's the same value as the initial iron
The variation in mass is impossible to detect with THAT balance scale... The EXTREME HEAT of the reaction is the cause, given how it expands the small spring in the pressure-sensing mechanism...
Not at all! The slight decrease at the start was because of the heat causing a thermal, rising current. But the increase in mass due to the addition of oxygen and to the iron is absolutely detectable with the balance that I used.
@@TheScienceClassroom I understand what you mean now, it was misleading. Oxygen gets "drawn" towards the iron, literally getting adsorbed from the air, keeping the ionization going, literally increasing the total weight of the object, which now has more atoms tightly packed on the surface of the mesh/"foam" than those prior to ignition. Got it. I had to take into account the entire surface of the steel wool to understand why an increase in mass is then possible AND measurable after ignition. So, in a way, it's like it's compressing atoms from the air surrounding it, increasing the pressure all over the surface. My fault.
The product is more likely FeO or Fe2O3. FeO2 is possible but unlikely because it's very rare and needs more controlled conditions for production.
True
exactly my thoughts
Thanks for the tip on a really easy way to start a fire for survival 😁👊🙏🔥
😃
Steel wool made fnaf....
Perhaps heat updrafts lift the steel wool causing the weight to initially decrease. Also, some pieces fly off in the beginning
I agree 💯, I think the heat updraft is why the mass initially showed a decreases.
problem :
mi = 27.35g
mf = 29.06g
how can i find Fe mass ?
assuming all the iron burnt? realistically I doubt everything got oxidised but if it did you could just use molar mass
the difference in mass is the mass of oxygen
through 4 Fe + 3 O2 -> 2 Fe2O3 and via iron and oxygen's molar mass you can find how much iron reacted and, if everything reacted that's the same value as the initial iron
Yo I did this with a full piece of steel wool and blew on it until it looked like a Frosted Mini Wheat from HELL.
The variation in mass is impossible to detect with THAT balance scale...
The EXTREME HEAT of the reaction is the cause, given how it expands the small spring in the pressure-sensing mechanism...
Not at all!
The slight decrease at the start was because of the heat causing a thermal, rising current. But the increase in mass due to the addition of oxygen and to the iron is absolutely detectable with the balance that I used.
@@TheScienceClassroom I understand what you mean now, it was misleading. Oxygen gets "drawn" towards the iron, literally getting adsorbed from the air, keeping the ionization going, literally increasing the total weight of the object, which now has more atoms tightly packed on the surface of the mesh/"foam" than those prior to ignition. Got it.
I had to take into account the entire surface of the steel wool to understand why an increase in mass is then possible AND measurable after ignition.
So, in a way, it's like it's compressing atoms from the air surrounding it, increasing the pressure all over the surface.
My fault.
All good! I appreciate your input!
You could have left that 9v battery in your smoke detector and just used a match.
That also works!
Might be the scale electronics affected by heat.
I don't think so. Although the reaction looks violent, it doesn't heat the scale up very much. Plus the metal plate seems to protect the electronics
@@TheScienceClassroom metal plate absorbs heat and radiates. Thank you for amazing videos . I was curious if results could be distorted by any factor.
What song is in the background?
It's called Acoustic Sunrise
Is acoustic sunrise your favorite song?
We were just wondering.
It's free 😁
So you only like it because it’s free?