HELP!! GIVING 80 POINTS 4.95 g of ethylene (C2H4) are combusted with 3.25 g of oxygen.

(5 Points) Write a balanced equation. (ethylene plus oxygen yields carbon dioxide and water)

(5 Points) What is the limiting reactant? You must show your work.

(5 Points) If the actual yield of Carbon dioxide is 2.50 g, what is the percent yield for the reaction? You must show your work.

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

Identify the electromagnets with poles that are reversed from the electromagnet shown above

Ants live on acacia trees in south america. the ants feed on sugars secreted by the trees. the trees provide room for the ants to live. the ants sting any other insect or animal that comes to eat the trees. what type of relationship is this?