What volume of water has the same mass as 3.0m3 of ethyl alcohol?

If a || b and e || f, what is the value of y ?

Iknow the answer to 13 is b and 14 is d. i just need to know why the correct answers are correct

With the largest atoms and the smallest number of valence electrons and with the smallest atoms and the greatest number of valence electrons are the most reactive. a. nonmetals; metals b. nonmetals; transition elements c. transition elements; metals d. metals; nonmetals