1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ki77a [65]
3 years ago
14

Atmospheric pressure decreases as altitude increases. in other words, there is more air pushing down on you at sea level, and th

ere is less air pressure pushing down on you when you are on a mountain. if pentane (c5h12), heptane (c7h16), and heptanol (c7h15oh) are heated evenly at different altitudes, rank them according to the order in which you would expect them to begin boiling
Physics
1 answer:
xenn [34]3 years ago
4 0
<span>The expected boiling point of a substance increases with an increasing molar mass of the substance. So I would expect the lighter compounds to boil at lower temperature. Also more polar molecules tend to boil at higher temperature. Pentane is the lightest of all three compounds, so it should boil the soonest. Heptane is a lot heavier than Pentane, but slightly lighter than Heptanol. So it should boil next. Heptanol is the heaviest of all of the molecules and is also quite polar compared to heptane. So it should have the highest of all the boiling points.</span>
You might be interested in
3) An explorer walks 13 km due east, then 18 km north, and finally 3 km west.
zysi [14]
Distance walked 34km and displacement should be something like 28km
6 0
4 years ago
Mary takes 6.0 seconds to run up a flight of stairs that is 102 meters long. If Mary's weight is 87 newtons, what power has Mary
fredd [130]

Answer: 1479watts

Explanation:

Power is defined as the energy expended or work done in a specific time.

Mathematically,

Power = Workdone/time taken

Since work done is force × distance

Power = force × distance/time

Force = Mary's weight = 87N

Distance = height of the flight = 102meters

Time = 6.0seconds

Substituting in the formula we have;

Power = 87 × 102/6

Power = 1,479watts

Note that the time must be in seconds before usage. If its given in minutes, you will have to convert to seconds

8 0
4 years ago
A child is swinging back and forth on a swing. Changes in her kinetic and potential energy are happening each moment. At which p
mina [271]

Answer:

When the person has swung all the way back (position A), the swing pauses a moment. ... As the swing continues forward, it gradually slows down. Its kinetic energy changes back to potential energy until it reaches the farthest point in its arc (position C).

5 0
3 years ago
How many does the UK have of nuclear power stations
DIA [1.3K]

Answer: 11

Explanation: In addition to nuclear reprocessing units at Sellafield and Urenco's Tails Management Facility (TMF) in Capenhurst, the UK has 11 active nuclear reactors in five locations (10 advanced gas-cooled reactors (AGR) and one pressurised water reactor (PWR)).

Please give brainliest or whatever brainlyest if this has helped :)

7 0
3 years ago
What is the kinetic energy of a 1200 kg object that is moving at a speed of 24 m/s?
Marat540 [252]
KE=1/2mv^2 so the KE=345600 J
3 0
4 years ago
Read 2 more answers
Other questions:
  • A 100 watt incandescent light bulb is operated for 7 hours, and a 32 watt fluorescent light bulb is operated for the same period
    10·1 answer
  • Two uniform solid cylinders, each rotating about its central (longitudinal) axis, have the same mass of 3.56 kg and rotate with
    10·1 answer
  • Which of these is NOT a type of lever?<br> A. rake<br> B. ramp<br> C. crowbar<br> D. scissors
    7·2 answers
  • In addition to their remarkable top speeds of almost 60 mph, cheetahs have impressive cornering abilities. In one study, the max
    13·1 answer
  • Describe three forces that are acting in the situation described below
    15·2 answers
  • 1. An unbalanced force of 25N is applied to a 12kg mass. What is the acceleration of the mass?
    6·1 answer
  • You stand on a bridge above a river and drop a rock into the water below from a height of 25 m. (Assume no air resistance)
    14·1 answer
  • During energy transformation, all energy systems: are
    10·2 answers
  • Consider a portion of a cell membrane that has a thickness of 7.50nm and 1.3 micrometers x 1.3 micrometers in area. A measuremen
    15·1 answer
  • PLEASE HELP!!!
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!