## Search found 105 matches

Thu Oct 03, 2019 2:41 pm
Forum: SI Units, Unit Conversions
Topic: Sig Fig Mistakes
Replies: 17
Views: 286

### Re: Sig Fig Mistakes

Letty Liu 1K wrote:Should we round off the numbers as we calculate or leave them as is until the final answer?
I was taught to not round as you calculate, as that would interfere with the accuracy of your final answer. Then, you can round and use the sig figs.
Thu Oct 03, 2019 10:17 am
Forum: Empirical & Molecular Formulas
Topic: Empirical Formula Purpose
Replies: 13
Views: 246

### Re: Empirical Formula Purpose

The empirical formula just shows the ratio between the atoms of a compound, and aids in finding the molecular formula.
Thu Oct 03, 2019 10:16 am
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Textbook Question E15
Replies: 3
Views: 66

### Re: Textbook Question E15

The (OH)2 is the hydroxide. The sulfide of the metal is going to have sulfur in the formula. I believe the problem wants you to find the mystery metal M, then find the formula of the sulfide of the metal.
Wed Oct 02, 2019 4:28 pm
Forum: Significant Figures
Topic: Quick General Question!
Replies: 5
Views: 120

### Re: Quick General Question!

You've got me questioning my own knowledge on sig figs now, but I was taught that rounding was appropriate when doing sig figs. So 4.70 would be correct.
Wed Oct 02, 2019 4:24 pm
Forum: Empirical & Molecular Formulas
Topic: HW problem F9
Replies: 8
Views: 129

### Re: HW problem F9

I'm not sure what you quite mean by the atoms "canceling out", but I would assume atom ratio refers to the subscript on the elements in the formula. More specifically the empirical formula.