C8h18 + o2à co2 + h2o is the unbalanced combustion reaction between octane and oxygen. what is the coefficient for carbon dioxide in the balanced equation? a. 2 b. 8 c. 16 d. 18

Which element in the third period would you expect to have the larger atomic radius, sodium (na) or sulfur (s)? a. sodium, because it has a higher effective nuclear charge attracting electrons in fewer energy levels. b. sodium, because it has fewer protons attracting electrons in the same energy levels. c. sulfur, because it has more protons attracting electrons in more energy levels. d. sulfur, because it has a higher effective nuclear charge attracting electrons in the same energy levels.

How would you reduce the volume of gas

Gymnast always perform on padded mats. how does the mats protect the gymnast