Boiling
is
the
process
in
which
the
liquid
phase
changes
to
gaseous
phase
at
a
constant
temperature
What
would
be
the
final
temperature
of
a
mixture
of
50g
of
water
at
20
°
C
temperature
and
50g
Explain
why
dogs
pant
during
hot
summer
days
using
the
concept
of
evaporation
?
(
ASI
)
Why
do
we
get
dew
on
the
surface
of
a
cold
soft
drink
bottle
kept
in
open
air
?
(
ASI
)
Condensation
is
the
reverse
process
of
evaporation
.
OCC
of escaping of molecules from the
evaporation and it is a cooling process.
heric press
er equal? W
and constant pressure.
Improve your learning
omplete
does
64V9IH
or for
of water at 40°C temperature? (ASI)
2.
3.
4.
Write the differences between evaporation and boiling? (ASI)
17
Free distribution by Govt. of A.P.
Answers
Answer:
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Explanation:
20°C + 273.15 = 293.15K
When a wet object dries, it is because the liquid water that is on the object evaporates to water vapor and diffuses out into the air. On the molecular scale, object wetness consists of many water molecules loosely and non-statically bonded to each other in liquid form, as well as bonded to the object.
Take 2 plate of different sizes one should be comparatively smaller or bigger than the other, fill the plate with equal amount of water place the plate in sunlight .
observation: the plate which is bigger in size will have less water as compared to the plate with smaller surface area.
Higher specific heat means the substance can absorb or discard high amount of energy with less change in its temperature. During summer, the water evaporates from rivers, ponds etc. by absorbing energy from atmosphere and water bodies. ... So we get temperatures of both water sources and atmosphere relatively lower.
a sauce pan full of w
he stem tube of the funnel is above the water or pointing upward into
ottom portion of the funnel on a nail or on a coin so that water can ge
na stove and heat it till it begins to boil. Where do the bubbles for
plain how a natural geyser works using this experience.
As the boiling point of the water increases, its pressure increases. So from the bottom at the sauce pan where the nail or coin is placed, bubbles arise. In geyser, boiling starts near the bottom of the geyser and bubbles arises above the water out begin the eruption. This is basically based on working of natural geyser
do you appreciate the role of the higher specific
Aim: To find the specific heat of solid experimentally.
Material Required: Calorimeter, Thermometer, Stirrer, water, steam heater, wooden box and solid whose 'S' to be found
Procedure:
Measure the mass of calorimeter with stirrer
Now fill one third of volume of calorimeter with water. Measure its mass and its temperature
Take few lead shots quickly into the calorimeter (with minimum loss of heat). We will observe that the mixture settles to a certain temperature after some time. Measure this temperature and mass of calorimeter along with contents.
Since there is no loss of heat to surroundings,we can assume that the entire heat lost by the solid is transferred to the calorimeter and water to reach the final temperature.
Let the specific heats of the calorimeter , lead shots and water be
respectively, according to the method of mixtures we know that Heat lost by the body=Heat gain by the calorimeter + heat gain by the Water
Knowing the specific heats of calorimeter and water, we can calculate the specific heat of the solid (lead shots).
The water in the dish will evaporate faster because we know that the evaporation process will be more and quick when the surface area is, here the surface area is more when compared to that of the cap. Therefore the evaporation process will be more in the dish rather than that of the cap