. El “hielo seco” es dioxido de carbono solido a temperatura inferior a -55 y presión de 1 atmosfera. Una muestra de 0.050 g de hielo seco se coloca en un recipiente vacio cuyo volumen es de 4.6 L, que se termostata a la temperatura de 50°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.