Pyrite because it doesn’t sink it floats
Flourine I guess must be the answer
Answer:
When a cold front approaches there can be a sudden drop in temperature, strong wind gusts, and heavy rain and thunderstorms.
Explanation:
Answer:
2H2 + O2 -----> 2H2O
Not sure about the second question though.
Answer:
The hot water remains at the top of chilled water.
Explanation:
The hot water remains at the top of chilled water because hot water has less denser as compared to chilled water. Due to higher density of chilled water, it remains at the bottom due to its greater mass while on the other hand, the hot freshwater goes upward and spreads at the top of the chilled water due to lower mass so when the hot water is added to the chilled water, hot water remains at the top.
