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pav-90 [236]
3 years ago
11

Which variable is held constant when testing for the thermal expansion relationship of a gas?

Chemistry
2 answers:
Alenkasestr [34]3 years ago
7 0

pressure is the correct answer

astraxan [27]3 years ago
3 0

Answer:

Pressure

Explanation:

  • In Charles Law Pressure is kept constant and the quantities that are manipulated is temperature. Therefore we can use Charles law in order to compare volume and temperature. Volume and temperature are directly proportional to each other.

                                  V α T

                                  V = kT

                                 Pressure is held constant

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Giving 30 points!! please help <3
TiliK225 [7]

Answer:

below :)

Explanation:

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Energy storage molecules, cellular respiration

Process, energy

Oxygen, energy storage molecules, energy, carbon dioxide

Cellular respiration, carbon

Carbon, nitrogen

Nitrogen

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3 0
2 years ago
How many valence electrons do the halogens possess? group of answer choices
jok3333 [9.3K]

The valence electron does the halogens possess are 7

  • Valence electrons are found in the outermost energy level of an atom
  • They are involved in the formation of chemical bonding with other atoms.
  • The halogens elements are found in group 17 on the periodic table
  • The halogens include fluorine, chlorine, bromine, iodine and astatine.
  • They have seven valence electrons, so they are extremely reactive as they only need one more to fill their outer shell.
  • By octet rule we can say that the electron with 8 outer most shell is full and stable.

Hence the halogens posses 7 valence electron

Learn more about the valence electron on

brainly.com/question/13552988

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5 0
1 year ago
Smog is a type of air pollution. It is a mixture of fog and smoke or other Airborne pollutants such as exhaust fumes. What is a
Tanya [424]
The answer is acid rain 

for study island your welcome :)
8 0
3 years ago
I have attached all the problems, but really if you just do one so I understand how to do it, that would be great!
Ivahew [28]

Answer:

Answer of question a is 345J.

Explanation:

In question a following is given in data:

-mass of iron (m) = 10.0 g

-temperature (ΔT) = final temperature- initial temperature= 100-25=  75 degree Celsius

-Specific Heat capacity of iron (c)= 0.46J/g°C.

Heat (Q)=?

Solution:

Formula for Heat is :

Q=m x c x ΔT

Q= 10 x 0.46 x 75

Q= 345 J.  

so, 345 joules of heat is needed to increase the temperature of 10 grams of iron.

  • From the above formula all other questions can easily be solved from the same procedure.
4 0
3 years ago
30 points if you can help me with this chemistry question
PIT_PIT [208]

answer:

i am pretty sure you use cross charges for this.

so i think it is the third choice.

5 0
3 years ago
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