Pre-paring Solutions
- Labbie
- Posts: 3240
- Joined: 28 Nov 2006, 10:00
- Job Title: Retired
- Suburb: At Home
- State/Location: NSW
Solutions
If any one has some time. It would great if people could check this out. I have been asked to do a solution sheet for other labbies.
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Regards Labbie
Lab Manager/Lab Tech, mind reading etc etc
Now retired
Lab Manager/Lab Tech, mind reading etc etc
Now retired
- noona
- Posts: 900
- Joined: 11 May 2007, 10:00
- Job Title: Lab Tech
- School: Greystanes High School
- Suburb: Greystanes
- State/Location: NSW
Re: Solutions
Hi Labbie
Looks good
Looks good
Noona
Lab Manager
Greystanes High School
Beresford Rd
Greystanes 2145
8868 9113
ROSALIE.CASSAR@det.nsw.edu.au
Lab Manager
Greystanes High School
Beresford Rd
Greystanes 2145
8868 9113
ROSALIE.CASSAR@det.nsw.edu.au
- kimmy
- Posts: 418
- Joined: 01 Jun 2006, 10:00
- Job Title: School Lab Assistant
- School: Quirindi High School
- Suburb: Quirindi
- State/Location: NSW
Re: Solutions
Great - I have a new labbie working 2 days with me and some of this will help her heaps when im not in sight.
Kimmy
Kimmy
Re: Solutions
You're seriously underworked Labbie
Mol Wt to 1L = 1M adjust for any other
the only thing that sends me looking at books is occassionally I get asked for Normal solutions
Mol Wt to 1L = 1M adjust for any other
the only thing that sends me looking at books is occassionally I get asked for Normal solutions
- Labbie
- Posts: 3240
- Joined: 28 Nov 2006, 10:00
- Job Title: Retired
- Suburb: At Home
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Re: Solutions
Thanks Ocker, yes I do agree, I have been asked for normal solutions, that is some thing I did forget. Richard Morante even he did not pick that up. So thank you very much.
Under worked you are kidding, it took me 14 months to get that done. Worked on it during the refub mostly.
I shall perhaps edit it for normal solutions.
Under worked you are kidding, it took me 14 months to get that done. Worked on it during the refub mostly.
I shall perhaps edit it for normal solutions.
Regards Labbie
Lab Manager/Lab Tech, mind reading etc etc
Now retired
Lab Manager/Lab Tech, mind reading etc etc
Now retired
-
- Posts: 62
- Joined: 09 Jul 2010, 15:19
- Job Title: laboratory technician
- School: Calrossy
- Suburb: Tamworth
- State/Location: NSW
Re: Solutions
Thanks Labbie
I am Annett Stanley and have only just started in the job this term, so am very new
(I haven't done much science ) and I will find this extremely helpful along with all the other "labbies" around me
once again thanks for your time and effort to put this together for us
Annett Stanley
Calrossy School
Tamworth
I am Annett Stanley and have only just started in the job this term, so am very new
(I haven't done much science ) and I will find this extremely helpful along with all the other "labbies" around me
once again thanks for your time and effort to put this together for us
Annett Stanley
Calrossy School
Tamworth
Annett Stanley
Tamworth
Tamworth
Re: Solutions
Welcome Annett!
You'll find you'll settle in very quickly with the help of all the knowledgeable labbies on the site.
I don't know what we'd do without it.
Julie
You'll find you'll settle in very quickly with the help of all the knowledgeable labbies on the site.
I don't know what we'd do without it.
Julie
- Labbie
- Posts: 3240
- Joined: 28 Nov 2006, 10:00
- Job Title: Retired
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Re: Solutions
Welcome to chemtalk Annett, and I am please you will find solutions handy.
Please if you see any mistakes any one let me know
Please if you see any mistakes any one let me know
Regards Labbie
Lab Manager/Lab Tech, mind reading etc etc
Now retired
Lab Manager/Lab Tech, mind reading etc etc
Now retired
Re: Solutions
Welcome to Annette.
This is by far the best place to be on a working day!
This is by far the best place to be on a working day!
- Labbie
- Posts: 3240
- Joined: 28 Nov 2006, 10:00
- Job Title: Retired
- Suburb: At Home
- State/Location: NSW
Re: Solutions
Warning!!!!!!!!!!!!!!!!!!!!!!!! please when printing it is 10 pages long, silly me you only need to print out 5 pages. Sorry and thank you Ocker
Regards Labbie
Lab Manager/Lab Tech, mind reading etc etc
Now retired
Lab Manager/Lab Tech, mind reading etc etc
Now retired
-
- Posts: 20
- Joined: 17 Feb 2011, 08:34
- State/Location: NSW
diluting chemicals
Hi
Please tell me how much of 2m hcl i need to make 1m hcl. Thanks fo rhelping me out before.
cheers
Please tell me how much of 2m hcl i need to make 1m hcl. Thanks fo rhelping me out before.
cheers
- Labbie
- Posts: 3240
- Joined: 28 Nov 2006, 10:00
- Job Title: Retired
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Re: diluting chemicals
Do a search for solutions, I'll see if I can link this.
Regards Labbie
Lab Manager/Lab Tech, mind reading etc etc
Now retired
Lab Manager/Lab Tech, mind reading etc etc
Now retired
Re: diluting chemicals
The ratio is the weaker acid divided by the stronger. Ie in this case 1 divided by 2, or 1/2. So if you want 100mls 1M acid it is 100 x 1/2 or 50mls of the 2m acid made up to 100ml distilled water.
Re: Solutions
I have to admit I am too lazy , I like to punch in numbers and answer is there
http://www.easycalculation.com/chemistr ... utions.php
http://www.handymath.com/calculators.html
http://www.graphpad.com/quickcalcs/molarityform.cfm
http://www.easycalculation.com/chemistr ... utions.php
http://www.handymath.com/calculators.html
http://www.graphpad.com/quickcalcs/molarityform.cfm
Cheers Jazz
- Labbie
- Posts: 3240
- Joined: 28 Nov 2006, 10:00
- Job Title: Retired
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Re: Solutions
I've bumbed this for you Suzie,
You do not have the required permissions to view the files attached to this post.
Regards Labbie
Lab Manager/Lab Tech, mind reading etc etc
Now retired
Lab Manager/Lab Tech, mind reading etc etc
Now retired
- Labbie
- Posts: 3240
- Joined: 28 Nov 2006, 10:00
- Job Title: Retired
- Suburb: At Home
- State/Location: NSW
Re: Solutions
This is the lastest Solutions, Please print the one above, as their was a few mistakes in the very first one.
Happy Easter.
Happy Easter.
Regards Labbie
Lab Manager/Lab Tech, mind reading etc etc
Now retired
Lab Manager/Lab Tech, mind reading etc etc
Now retired
Re: Solutions
Wow! Just what I needed! It's great to have something rather than the net to help make up the soultions needed!
Re: Solutions
Just looked at the chart and the first one I looked at was the copper sulfate. I think there is one little mistake with the decimal point in the conc sulfuric acid added in the 0.5M: should be 6.25ml acid not 62.5ml "0.5M 312g in 2.437.5 water add 62.5ml Conc. Sulfuric Acid for 2.5 Lt".
Sorry Labbie, hope it is an easy fix.
Sorry Labbie, hope it is an easy fix.
Re: Solutions
If the 0.1 M uses 12.5mL of sulfuric, then 0.5M needs 62.5mL.
It is correct, right??
Lada
It is correct, right??
Lada
- Labbie
- Posts: 3240
- Joined: 28 Nov 2006, 10:00
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Re: Solutions
You are correct Lada, It could be the way I put then in order. 1 Litre then 2.5 litres. Hey Ladies I am so pleased that you a checking it for me. I went over a few times, but I would love every one to check it. Then we can say its correct and use it with confindence.
Thank you so very much.
Thank you so very much.
Regards Labbie
Lab Manager/Lab Tech, mind reading etc etc
Now retired
Lab Manager/Lab Tech, mind reading etc etc
Now retired