Na2so4+ hcl =nacl +so2 + h2o A) 2, 2, 2, 1, 2

B) 2, 4, 4, 2, 2

C) 1, 1, 2, 1, 1

D) 1, 2, 2, 1, 1

hurricanes form in warm water

it would be b. 6co2 + 6h2o --> c6h12o6 + 6o2

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.