Answer:
Option (D) freezing point depression
Explanation:
Calcium chloride is added to the roadways after a snowstorm because it reduces the freezing point of the ice. Further more, it has been observed that the calcium chloride also produces enough heat which enhances the melting of the ice as it produces an exothermic reaction.
Answer:B) Going Down
Explanation:
The higher the concentration of hydro in ions in a solution, the more acidic it is, and the lower the pH is.
(I just answered the question on USA TP!)
We know that ;
Force = mass × acceleration
=> Force = 3×3 = 9N
_________
hope it helps!
Answer:
Explanation:
From the question we are told that:
Frequency 
Generally the equation for Energy of an electromagnetic wave is mathematically given by
Where
h=Planck's constant
Therefore
