1)Will the molarity change if the temperature is changed?
2)What is average atomic mass?

Asked by shambhavi.srivastava5 | 5th May, 2015, 07:32: PM

Expert Answer:

Dear Shambhavi,
 
Answer to your first query:
Molarity is calculated by:
M = (mol) / (L)
In the above formula of molarity, you have L (volume) of solution in the denominator. Volume is temperature dependent. It varies with changing temperature. Because of this, molarity changes if the temperature changes. So, when temperature increases molarity decreases and when temperature decreases molarity increases.
 
Answer to your second query:

Average atomic mass is the weighted average of the atomic masses of the naturally occurring isotopes of an element. To find the average atomic mass of an atom, we take into account all of the isotopes that exist and the percentage of each type. 

Average atomic mass = (Mass of isotope × Relative abundance)

Answered by Arvind Diwale | 7th May, 2015, 09:09: AM