Answer:
melting from ice cube to water
Explanation:
this is because the object gains heat and melting occurs in the object
I'll go through them one by one
1) H-S
The electronegativity of Hydrgoen is 2.2, and sulphur is 2.58,
therefore the difference is 0.38 (2.58-2.2=0.38)
2) H-Cl
Hydrogen: 2.2, Chlorine: 3.16
therefore difference is 0.96
3) N-H
Nitrogen: 3.04, Hydrogen: 2.2
therefore difference is 0.84
4) C-H
Carbon: 2.55, hydrogen: 2.2
therefore difference is 0.35
so, the most apparent electronegativity is chlorine, but this could have been done without actually doing the maths. The trend of electronegativty increases across a period and increases up a period due to the strong affinity of the nucleus with bonding electrons. This does not include noble gases though, as they have no charge due to having complete valance shells. T<span>he most electronegative element is Fluorine (9), and the least electronegative element (besides noble gases) is Francium (87)</span>
Answer:
C. T>617 K
Explanation:
We are given that
We have to find the temperature at which the reaction is spontaneous.
When
Therefore, the reaction is spontaneous at certain range of temperature.
Option A is not true.
When is negative, then the reaction is spontaneous.
When T<50
Suppose T=49 K
Therefore, .Hence, the reaction is not spontaneous.
Option B is wrong.
C.T>617K
Suppose T=618 K
Therefore, .Hence, the reaction is spontaneous.
So, option C is true.
D.T<617 K
Suppose T=616 K
Therefore, .Hence, the reaction is not spontaneous.
So, option D is not true.
Answer:directly proportional to the pressure of the gas above the liquid
Explanation: