If the atmospheric pressure in the laboratory is 1.2 atm, how many moles of gas were in each syringe?

Air syringe

Room temp water 21.1 degree Celsius

Volume 5.0

Helium syringe

Room temp water 21.1 degree Celsius

Volume 5.1

it is important to conserve water because there is very limited amount of freshwater here on earth and if we are not smart about how we use it we will only be runnning out of our supply faster than neccessarry.

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.