Answer:
The hypothetical van't Hoff factor of magnesium nitrate,
is <u>3 .</u>
Explanation:
Lets calculate -
We know that ,
Dissociation should be 100% for the hypothetical vant hoff factor , that is
and 
for
Therefore , putting the given values ,
<u>Hence , the answer is 3.</u>
The ice caps, lakes, rivers, and other bodies of water can be found all around the globe
Answer:
It is false
Explanation:
ph value below 7 are acidic, and ph values above 7 are alkaline (basic)
The balanced reaction is
Ca + 2H2O → Ca(OH)2 + H2
Here this reaction can be compared with
A + BC ---> AB + C
So here one reactant (A) is accepting a group which is being given by another compound (BC) however the A is not giving any group / element or ion
So this single displacement
Similarly in the given reaction
the anion OH- is only being replaced
The element Ca accepts OH- and H2O loses the same group to form new element H2
So the correct answer is
Single replacement also known as single displacement
