Which of the following is not considered a branch of chemistry?
organic chemistry
biochemistry
analytical chemistry
inorganic chemistry
physical chemistry
pure chemistry

how many significant digits are in the number 0.0001305?
3
4
7
8

pure chemistry

4

Explanation:

It is the consideration of the facts and theories of chemistry in their purely scientific relations. Therefore it is not considered to be a branch of chemistry because it doesn't necessarily refer to their practical application or mere utility.

we can conclude that the melting point of table salt is above room temperature (it's actually 801 deg c). the melting point of mercury must be below room temperature (- 39 deg c).