Answer:
Option C
Explanation:
Litmus paper shows only whether the solution is acidic or basic, but not how strong it is.
=> Base turns the red litmus paper blue
=> Acid turns the blue litmus paper red.
Answer:
Lithium loses one electron to become an Ion.
<u>Answer:</u> The final temperature will be 
<u>Explanation:</u>
Calculating the heat released or absorbed for the process:

In a system, the total amount of heat released is equal to the total amount of heat absorbed.

OR
......(1)
where,
C = heat capacity of water = 
= mass of water of sample 1 = 100.0 g
= mass of water of sample 2 = 71.0 g
= final temperature of the system = ?
= initial temperature of water of sample 1 = 
= initial temperature of the water of sample 2 = 
Putting values in equation 1, we get:

Hence, the final temperature will be 
Answer:
false
Explanation:
1111111111111111111111111
A fluorine element has 7 valence electrons.
A stable fluorine ion should have 8 valence electrons.
So fluorine gains an extra electron.
Thus, the most stable monatomic ion is 