Calculate the atomic mass in grams of 0.35 moles of ch4

5.6 grams

Explanation:

To calculate the moles, we use the equation:

Thus mass =

For

Moles of = 0.35 moles

Molar mass of = 16 g/mol

Putting values in above equation, we get:

mass =

The atomic mass of 0.35 moles of is 5.6 grams.

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.