the correct answer to your question is Binary Compounds.
A. Color
Clor is the most unrelible when it comes to finding out minerals.
Adapted to the climate change, pollution
Solar panels transform the energy from the light of the Sun and turns it into electricity.
Answer:
The ice chunk will take 2.47 seconds to hit the water.
Explanation:
Height from which ice chunk fell = h = 30.0 m
Initial velocity of the ice chunk = u = 0 m/s
Time taken by ice chunk to cover 30.0 m of height = t
Acceleration due to gravity = g 
Using second equation of motion ;



The ice chunk will take 2.47 seconds to hit the water.