[dazza95]

Three tests were conducted where a
nail was placed in water, 10%salt saturated, 20% salt saturated, 30% salt saturated etc to 100%
a Nail + Cu placed in water (same solutions above^)
and A Nail + zinc in water.. (same solutions)
All left over the same amount of days
The results are attached, the graphs show mass gained against salt solution.
Can anyone explain the graphs as to what happened/caused it to look like this?
And what should the graphs look like?
Thanks

[Arkcon]

I looked at your graphs, and there's nothing terribly wrong with them.  Can you summarize the data you see visually off the graphs?  You will need to for your lab report.  Can you see similarities between the different samples?  What does that tell you?  Can you relate your different samples to something you learned recently in class?

This is how we help around here.  We offer hints, to help you learn for yourself.  We don't give free answers. 

[dazza95]

So does it show whats supposed to happen?

the more salt that is added the faster the nail rusts, so 100% showed the most because its happening faster?

it was originally stated that a nail is observed to rust slower in salt water; it is believed to be due to the lower oxygen solubility in the saltier water
Why did it put on so must mass at 100% saturated if it has the least oxygen in it?

[fledarmus]

So does it show whats supposed to happen?

It shows what happened. These are experimental results.

it was originally stated that a nail is observed to rust slower in salt water; it is believed to be due to the lower oxygen solubility in the saltier water
Why did it put on so must mass at 100% saturated if it has the least oxygen in it?

What happened in pure fresh water? (0%)  Over what ranges of salt concentration is your generalization (that nails rust slower in salt water) true?

[dazza95]

it was originally stated that a nail is observed to rust slower in salt water; it is believed to be due to the lower oxygen solubility in the saltier water
Why did it put on so must mass at 100% saturated if it has the least oxygen in it?

What happened in pure fresh water? (0%)  Over what ranges of salt concentration is your generalization (that nails rust slower in salt water) true?
[/quote]

In pure water 0% the nail put on around 1.2g,
Well the nail rusted slower in all the salt solutions because neither of them put on as much mass as the nail in the water