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Montano1993 [528]
3 years ago
10

Which of the following represents a physical change in matter

Chemistry
1 answer:
Alik [6]3 years ago
5 0
There's nothing following?
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How many square centimeters are in an area of 8.10inch2 ?
In-s [12.5K]
8.10in^2=52.25796cm^2

1 in^2=6.4516cm^2

8.10in^2*6.4516cm^2/1 in^2

8.10in^2*6.4516cm^2= 52.25796 cm^2
5 0
3 years ago
A fixed amount of gas occupies a volume of 7.25 l at a pressure of 4.52 atm. what will be the volume occupied if the pressure is
Eddi Din [679]
P1V1=P2V2
SO
7.25X4.52=1.21XV2
V2=27.1 l
6 0
4 years ago
Hello<br><br><br> WRITE CAUSES AND CONSEQUENCE OF ANY 2 NATURAL CALAMITIES.
-Dominant- [34]

Answer:

1) eathquake

earthquake is the natural calamities where there is the vertical and horizontal shaking of the

earth crust. it is cause due to overlappibg of the different plates that are present in the earth surface. when this plates intersect or expand the earth occurs

consequences are it causes loss of life and human property , degards the environment , it leads to flood, landslides etc The damage caused by earthquakes is from ground shaking, ground rupture, landslides, tsunamis, and liquefaction.

Next - volcanic eruption

its is the out flow of the larva from the inner of the earth to other surface. it is cayse due to high pressure exerted on the surface of the earth that leads to explode the inner larva.

its consequences are it degards the environment and loss of the beauty of the nature , there is loss of human life , widlife , etc. volcanic eruption include infectious disease, respiratory illness, burns, injuries from falls, and vehicle accidents related to the slippery, hazy conditions caused by ash. When warnings are heeded, the chances of adverse health effects from a volcanic eruption are very low.

7 0
3 years ago
What is the PH of a solution whose [H+] is 0.0007
cupoosta [38]
To determine the pH of the solution. All you would have to do is use the equation:

pH = -log(H3O^+)
pH = - log(0.0007)
pH = 3.15.

Note that H+ and H3O+ are the same, it is more accurate to say H3O+ because of how the H2O molecules become after receiving the additional proton.
7 0
3 years ago
What do proteins and nucleus acids have in common
Harrizon [31]

Answer:

They are both polymers that are found in living cells.

5 0
3 years ago
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