I need some help with stoiochemistry

[Cousin Okri]

I have no idea where else to turn. Anyone good at stoiochem?

[Gus the Crocodile]

I teach chemistry. What are you working on?

[Ⓥenom Ⓢnake 🐍]

Woof.

I am afraid I am not particularly good at chemistry, and aside from some VERY basic knowledge, it's almost fair to say I have almost no clue about 3d chemistry past what it is and it applications.

[Corbin Bleu]

just watch breaking ba-


I have no idea how to utilize chemistry tbh
most of the time when i hear the word chemistry i think of some dude mixing the wrong things together and blowing himself up...

[Cousin Okri]

Originally posted by Gus the Crocodile:

I teach chemistry. What are you working on?

The question is "What is the mass in atomic units of one molecule of Os2O3?"

I have no idea where to been start, man. Any help would be greatly appreciated

[Ⓥenom Ⓢnake 🐍]

2 Osmium each with 190.23 ± 0.03 u
3 Oxygen each with a mass 15.9994 u

428.4582 ± 0.06 u

[Gus the Crocodile]

Mole ratios are determined by the coefficients - the numbers you put in front of things in the equation.

In this equation, there are no numbers in front of anything, which is another way of saying they're all one. One mole of CO2 is forming one mole of C and one mole of O2. So if you know it formed 0.038 moles of C, then....

Originally posted by ⓥenom Ⓢnake 🐍:

428.4582 ± 0.06 u

Indeed :) Quick note though: best not to report results to more precision than your stated uncertainty. If you're including an uncertainty of 0.06, the result should be trimmed to 428.46.

[Ⓥenom Ⓢnake 🐍]

Originally posted by Gus the Crocodile:

Originally posted by ⓥenom Ⓢnake 🐍:

428.4582 ± 0.06 u

Indeed :) Quick note though: best not to report results to more precision than your stated uncertainty. If you're including an uncertainty of 0.06, the result should be trimmed to 428.46.

Excellent to note. Danka.

Always good to learn something new.

[Cousin Okri]

Ok one more question.

What mass of NH4OH would contain 9.3x10^23 atoms of hydrogen