Search found 5 matches
- Fri Oct 04, 2019 5:08 pm
- Forum: Accuracy, Precision, Mole, Other Definitions
- Topic: Molar mass
- Replies: 3
- Views: 403
Molar mass
This is more of a basic high school question, but nothing online clearly answers my question. When finding the mass in grams of a single molecule do you only find the molar mass, or do you divide the molar mass by avagrado's number? There's a question in the textbook that asks how to find the mass, ...
- Fri Oct 04, 2019 2:58 am
- Forum: Molarity, Solutions, Dilutions
- Topic: Converting Before or After?
- Replies: 10
- Views: 619
Re: Converting Before or After?
I was taught to solve the problem first, and convert after, so that it doesn't become confusing before, or even during, solving for any calculations.
- Thu Oct 03, 2019 2:11 pm
- Forum: Accuracy, Precision, Mole, Other Definitions
- Topic: Fundamentals E.3
- Replies: 7
- Views: 444
Fundamentals E.3
The question asks word for word "In a nanotechnology lab you might have the capability to manipulate individual atoms. The atoms on the left are gallium atoms (molar mass 70 g/mol), and those on the right are atoms of astatine (molar mass 210 g/mol). How many astatine atoms would the pan on the...
- Thu Oct 03, 2019 1:27 pm
- Forum: SI Units, Unit Conversions
- Topic: Dimensional Analysis Question
- Replies: 6
- Views: 357
Re: Dimensional Analysis Question
Dimensional analysis is simply the process of converting from one unit of measurement to another. The most basic example I can remember learning in high school is going from days to seconds. Here's a picture of my work. I hope this helps.
- dimensional analysis
- Thu Oct 03, 2019 12:48 pm
- Forum: SI Units, Unit Conversions
- Topic: knowing how many sig figs to use
- Replies: 17
- Views: 832
Re: knowing how many sig figs to use
You can use different amounts of sig figs as you're working on the problem, however make sure you keep track of how many sig figs for your final calculation. If you are constantly rounding to 3 sig figs, for example, it is probable your answer may be inaccurate or far from the actual answer.