Search found 16 matches
Search found 16 matches • Page 1 of 1
- Sun Jul 02, 2017 10:23 pm
- Forum: Significant Figures
- Topic: All students read this sig fig post [ENDORSED]
- Replies: 131
- Views: 17033
So does that mean if the question uses 3 sig figs, we use 4 sig figs throughout the calculations, then round up (or down), will we get points of for being inconsistent? Do we have to maintain sig fig numbers when we can easily round up/down?
- Sun Jul 02, 2017 10:16 pm
- Forum: SI Units, Unit Conversions
- Topic: Exercise E15
- Replies: 1
- Views: 325
I don't understand why is one of the steps to subtract and not divide between the metal hydroxide and the sulfide when it is asking to look for the molar mass? How are we suppose to know when to use one operation over the other?
- Sun Jul 02, 2017 9:56 pm
- Forum: Empirical & Molecular Formulas
- Topic: Trouble in finding the Molecular Formula
- Replies: 6
- Views: 1079
Hey Buddy! So to answer your question, after you divide by the smallest number, each element will have their molecular formula's number and multiplied by their atomic mass. Like if the ratio of CHO is 3:4:3 then you would multiply Carbon's atomic weight (12.01) and multiply that (3), Hydrogen (1.008...