🗑️ 🧵 Gen Chem Q
Anonymous at Sun, 17 Mar 2024 03:36:00 UTC No. 16082424
I was trying to help a friends kid with some chemistry homework, but it’s been quite while since I’ve done it and hoping to get some help.
Have an unknown metal oxide. We know the ratio is 2.9g M/g O (so 3:1 M:O) So the empirical formula is going to be choices of M3O or M6O2 or M9O3 just because it’s a high school kid taking a college chem class at their school, I’d guess/assume it wouldn’t be higher, was trying to work backwards a bit. We also know that the molar mass of the metal M = 69.44g/mol which we calculated. Besides the molar mass of O=16g/mol that’s all we know.
So, I think the #’s can really be rounded and I want to say that 100-70=30 giving 70% metal M and 30% O, but that’s just not working. Because 30/16=1.8…so 2O, and 70/6=11.6…so 12 and that would make it carbon which is not a metal. Which leads m back that I’m not making the correct start with the molar mass of M. Wtf am I doing wrong anons inb4 Reddit spacing.
Anonymous at Sun, 17 Mar 2024 07:49:57 UTC No. 16082662
>>16082424
Did you ask the kid for help?
Anonymous at Sun, 17 Mar 2024 09:08:42 UTC No. 16082736
troll post.
You've either given us false information or too limited information
The molar mass of 69.44 for the metal is false unless you're using some special isotope of gallium which, no you're not for a gen chem class.
Your 3:1 molar ratio for metal to oxygen is straight up retarded. Oxygen is +2 it's not going to bind to 3 fucking metals. Most metals bind to 1 or 2 oxygen per metal.
And finally a 2.9g M : 1 g O ratio does not tell enough at all.
Fucking homework and troll posting all at once.