Answer:
if you want to find average speed so u need to use this formula
Average speed = 
The mass of an element listed in the Periodic Table is the weighted average of all its naturally occurring isotopes.
Naturally occurring carbon is about
99 % carbon-12 (12.000 u) + 1 % carbon-13 (13.003 u).
That extra carbon-13 makes the <em>average atomic mass</em> greater than 12.000 u.
Answer:
B
Explanation:
its solute state is gas and dissolve in (solvent) liquid which is water
Negative. the answer is 'negative'