Answer:
Heptane (d) > Hexane (b) 3,3 dimethyl pentane (c) > butane (a)
Explanation:
<u>The boiling points of the alkanes are depends on the following factors:</u>
- Hydrocarbons with strong intermolecular forces have high boiling points.
- Longer carbon chain molecules have high boiling points.
- Straight chain hydrocarbon molecules have high boiling points than the branched chain hydrocarbons molecules because straight chain molecule have large surface area.
The given molecules are as follows.
a) Butane
b) Hexane
c) 3,3 dimethyl pentane
d) Heptane.
The Highest to lowest boiling point order is as follows.
Heptane (d) > Hexane (b) 3,3 dimethyl pentane (c) > butane (a)
6.023 x 10²³ particles in 1 mole of Boron
1.61 x 10³⁴ particles in = 1.61 x 10³⁴ / 6.02 x 10²³
= 2.61 x 10³⁰ moles of Boron.
Answer:
0.006 48 km/s
Explanation:
1. Convert miles to kilometres
14.5 mi × (1.609 km/1 mi) = 23.33 km
2. Convert hours to seconds
1 h × (60 min/1h) × (60 s/1 min) = 3600 s
3. Divide the distance by the time
14.5 mi/1 h = 23.3 km/3600 s = 0.006 48 km/s
My solving is a bit messy tho....HOPE I HELPED