How much gas is in an empty 29 ounce water bottle on a classroom desk? The classroom temperature is 25 °C and the pressure is 837 mmHg.
(hint: look for R value with mmHg) *
O 1.973 mol
1.275 mol
0.063 mol
0.128 mol
0.039 mol

elements make up everything, and they combine to make compounds.

the answer is c

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.

the objects have the same charge is correct.

nathan lee