Analyzing information use the following equations for the redox reaction between al3+ and na to answer the questions below. 3 ⎯→ 3 + 3e− (oxidation) + 3e− ⎯→ (reduction) 3 + ⎯→ 3 + + (redox reaction) a. explain how this reaction illustrates that charge is conserved in a redox reaction. b. explain how this reaction illustrates that mass is conserved in a redox reaction. c. explain why electrons do not appear as reactants or products in the combined equation. 0 al +1 na +3 al3+ 0 na 0

the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.

answer:

the reaction is type of combination reaction.

explanation:

on the product side, there are 2 molecules of bonded to fe   which means one atom of fe are combined two molecules of . so, balanced chemical equation becomes :

this reaction follows the reaction type of combination reaction. a combination reaction is defined as chemical reaction in which reactants combines together to form a single product.

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.