Status: Not yet answered Points possible: 1.00 What mass, in grams, of NaCl needs to be added to 1.6 kg of water in order to create a solution with a freezing point of
-5.7 °C? The freezing point depression constant of water is 1.86 °C/m.

the answer is true. hope it .

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.