Search found 10 matches

by Kristen Laulette 1C
Mon Apr 16, 2018 12:22 am
Forum: Balancing Chemical Reactions
Topic: Practice Worksheet Week 1 Question 3 [ENDORSED]
Replies: 3
Views: 312

Re: Practice Worksheet Week 1 Question 3 [ENDORSED]

Oh, I did make that mistake, thank you both so much!
by Kristen Laulette 1C
Sun Apr 15, 2018 11:29 pm
Forum: Empirical & Molecular Formulas
Topic: Name of a Compound
Replies: 2
Views: 322

Name of a Compound

When given the name of a compound, like sodium bicarbonate, how do you find the molecular formula when only given the name?
by Kristen Laulette 1C
Sun Apr 15, 2018 11:04 pm
Forum: Balancing Chemical Reactions
Topic: Practice Worksheet Week 1 Question 3 [ENDORSED]
Replies: 3
Views: 312

Practice Worksheet Week 1 Question 3 [ENDORSED]

I am going over week 1 material, and I did the question: What is the mass percent of the elements in Sr(NO2)2? I found the atomic mass of each, multiplied it by their subscripts, and got the molecular mass to be 147.6322 g/mol. I then divided the molecular mass by each one of the elements' mass in t...
by Kristen Laulette 1C
Sun Apr 15, 2018 10:51 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Isotopes [ENDORSED]
Replies: 12
Views: 788

Isotopes [ENDORSED]

I am super rusty on high school chemistry, and don't remember and truly never really got what isotopes are.

What is like a simple way to understand what an isotope is?
by Kristen Laulette 1C
Sun Apr 15, 2018 10:49 pm
Forum: Empirical & Molecular Formulas
Topic: Quiz 1 Last Question Help [ENDORSED]
Replies: 3
Views: 371

Quiz 1 Last Question Help [ENDORSED]

On the quiz, we were given element diagrams on the last problem where we had to determine the empirical and molecular formula. When finding the molecular formula based on the atom diagram, since I've heard you should do that first, do you count the amount of atoms of each molecule and then put that ...
by Kristen Laulette 1C
Sun Apr 15, 2018 10:37 pm
Forum: Student Social/Study Group
Topic: Study Group
Replies: 8
Views: 606

Re: Study Group

I would be completely up for this! I think it could really help!
by Kristen Laulette 1C
Sun Apr 15, 2018 10:34 pm
Forum: Empirical & Molecular Formulas
Topic: Worksheet Problem #4 [ENDORSED]
Replies: 2
Views: 574

Re: Worksheet Problem #4 [ENDORSED]

Thank you so much, definitely won't make that mistake again!
by Kristen Laulette 1C
Mon Apr 09, 2018 2:24 pm
Forum: Empirical & Molecular Formulas
Topic: Molecular/Empirical Formulas
Replies: 2
Views: 179

Re: Molecular/Empirical Formulas

Thank you so much!

Also, is that the only way of determining the order? Is there like exceptions or does that work in all cases?
by Kristen Laulette 1C
Mon Apr 09, 2018 2:20 pm
Forum: Empirical & Molecular Formulas
Topic: Worksheet Problem #4 [ENDORSED]
Replies: 2
Views: 574

Worksheet Problem #4 [ENDORSED]

In a review worksheet posted, problem #4 asks for the molecule that represents: 0.314 mol of a diatomic molecule has a mass of 10.05g. I divided 0.314 mol by the mass of 10.05g and got 32 g/mol. Don't you somehow have to find the closest atomic mass on the periodic table in order to find out which m...
by Kristen Laulette 1C
Sun Apr 08, 2018 10:06 pm
Forum: Empirical & Molecular Formulas
Topic: Molecular/Empirical Formulas
Replies: 2
Views: 179

Molecular/Empirical Formulas

How do you know which atoms come first in an empirical/molecular formula?

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