PLEASE HELP CHEMISTRY DIMENSIONAL ANALYSIS DUE IN 5 MINUTES

37.6 Km/h

Explanation:

From the question given above, the following data were obtained:

Distance = 100 m

Time = 9.58 s

Speed =?

Next, we shall convert 100 m to Km. This can be obtained as follow:

1000 m = 1 Km

Therefore,

100 m = 100 m × 1 Km / 1000 m

100 m = 0.1 km

Next, we shall convert 9.58 s to h. This can be obtained as follow:

3600 s = 1 h

Therefore,

9.58 s = 9.58 s × 1 h / 3600 s

9.58 s = 2.66×10¯³ h

Finally, we shall determine the speed. This can be obtained as follow:

Distance = 0.1 km

Time = 2.66×10¯³ h

Speed =?

Speed = Distance / Time

Speed = 0.1 / 2.66×10¯³

Speed = 37.6 Km/h

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.