A non-sandblasted rock could be rough or smooth depending on how it was formed.
A sandblasted rock should be much smoother, since the sand blasts away any rough edges. It will, however, be slightly smaller due to losing those edges.
Thomson suggested the model of atom which was a sphere of positive matter within which electronic forces determined the positioning of the corpuscles. The corpuscles were distributed in a uniform sea of positive charge. This was so-called "plum pudding" model.
Answer: C ) Thomson
Because it contains hydrogen which isn't formed by a special process like oxygen
First of all, the answer has 3 places of accuracy.
The formula for pH is
pH = - log[H+]
Given: Ph = 3.20
Solution
3.20 = - log[H+]
Divide by - 1
-3.20 = log[H+]
Take the antilog of both sides
10^-3.20 = [H+]
[H+]= 6.30 * 10^-4 moles/L This is a measure of concentration.
It can also be written as 0.000630 moles/L
The ocean is very interesting. There is so much of it on earth. There’s ocean nobody has seen. It’s crazy. I can study this by learning about the ocean and maybe going to the beach
