Consider the chemical equations shown here P 4 (s)+3O 2 (g) P 4 O 6 (s) P 4 (s)+5O 2 (g) P 4 O 10 (s) What is the overall equation for the reaction that produces P 4 O 10 from P 4 O 6 and O 2 ?

colorless gas, exhibiting a blue glow when placed in an electric field

b) solid

its a type of rock

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.