The correct answer is:
3) Earthquakes can be caused by volcanic eruptions.
You were right :)
The formula for sodium sulfate is na(so)
Answer:
Cu + HNO3 -----> Cu (NO3) 2 + NO2 + H2O
Explanation:
This equation is the equation for dissolving copper in nitric acid, this reaction is a REDOX reaction, that is, an oxide-reduction reaction.
Answer:
Distillation
Explanation:
A solution of water and ethanol are miscible. Hence, they can only be separated by a process known as distillation. Distillation is the process in which two or more constituents in a mixture are separated based on there difference in boiling points. <u>The mixture is subjected to high heat and the one with the least boiling point distills/evaporates out first followed by the next least boiling point</u>.
<u>From the explanation above, it can be deduced that ethanol (with boiling point of 78°) will be distilled out while water remains in the boiling tube or container</u>.
Its a pheromone
<span>The existence of human pheromones is not more known; however, some scientists report that some chemicals affect the human body like pheromones. and this word first appeared in 1950s
</span>hope it helps
