CHEMISTRY HIGH SCHOOL

If the pressure of a 2.00 L sample of gas is 50.0 kPa, what pressure does the gas exert if its volume isdecreased to 20.0 mL?
Which equation should you use?
V1 V2
T1 T2
P1V1 = P2V2
V1 Vâ‚‚
N1 N2

Answers

Answer 1
Answer:

Answer: P1V1 + P2V2

Explanation:

Related Questions

What is the volume of 2.10 moles of chlorine gas (Cl2) at 273 K and 1.00 atm?10.7 L22.4 L47.1 L82.0 L
The troposphere is warmed by the _____.energy of the entire solar system incoming radiation of the sun radiated heat from the Earth's surface atmospheric air circulation help plz
The elements in each column have ___________
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These statements describe three different reactions. 1 - An atom shares electrons with another atom. 2 - The nucleus of an atom is split apart. 3 - An atom gains an electron from another atom. Which reaction(s) most likely release the greatest amount of energy? 1 2 1 and 3 2 and 3

A solution with a pH of 2.0 has a hydronium ion concentration ten times greater than a solution with a pH of(1) 1.0 (3) 3.0
(2) 0.20 (4) 20.

Answers

Answer:The correct answer is (3).

Explanation:

The pH of the solution is defined as negative logarithm of H^+ or hydronium ions ions in the solution.

pH=-\log[H^+]

2=-\log[H^+]

[H^+]=0.01 M

The pH with 10 times the concentration H^+ ions.

[H^+]=10* [H^+]'

pH=-\log[H^+]'=-\log[(0.01)/(10)]=3

Hence, the correct answer is (3).
The answer is (3) 3.0. The solution with a pH of 2.0 has greater concentration means the other solution has greater pH. pH=-lg[H+]. So we can get the pH of other solution is 3.

2.The image below shows two nitrogen atoms. For these two atoms to form a stable molecule, N2, how many electrons would have to be part of covalent bonds?

Answers

D. 6 electrons

A single nitrogen atom has five electrons in its outer energy level to start, and will be most stable with an octet, or 8 electrons in its outer level.

Since N2 is a covalent bond, the lewis dot structure of  N2 would have a triple bond. Each bond contains 2 electrons, so if it has a triple bond it contains 6 electrons. 
Calculate the number of valence electrons of N2
N= 2x 5 = 10 
N2 has a total of 10 valence electrons, to become stable each N atom needs 8 electrons. 
So, therefore, 6 electrons would have to be a part of covalent bonds because they share 6 electrons in a triple bond. 

In this equation, what should be the coefficients of the reactants and products? I2 + O2 → I4O9

Answers

I am thinking that you are asking for the balanced equation for this chemical reaction. In order to balance this, you have to count each element where the elements in the reactants side and the product side should have equal number of molecules. The balanced reaction is as follows:


 2I2 + 9/2O2 → I4O9

What is scientific consensus?O a new scientific idea that was confirmed by the original researcher
an idea that has been changed due to new information
O a general agreement among scientists about a scientific idea
the understanding that knowledge in a particular area can be uncertain

Answers

The scientific consensus is a general agreement among scientists about a scientific idea. The correct option is C.

What is a scientific idea?

A scientific idea is the explanation or facts of science. It reveals the truth about the world. How the world works and the secrets of nature. It tells and gathers true information about the world.

The different aspects of life and the world are understood and studied by scientists. Different scientists work for different forms of life. The scientist's ideas change over the different evidence.

The generalized ideas of various scientists give and agree upon the different theories of the levels of science. The publication process and specialized field.

Thus, the correct option is C. a general agreement among scientists about a scientific idea.

To learn more about the scientific ideas, refer to the link:

brainly.com/question/18779762

#SPJ2

Answer:

it's C

Explanation:

got it right on EDG 2021

What is the volume of 4.5 moles of H2 at STP?

Answers

1.0 mole ---------- 22.4 at STP
4.5 moles --------- ?

4.5 * 22.4 / 1.0

= 100.8 L of Hâ‚‚

Choose the letter of the choice that best completes the statement or answers the question. Elements in the same group have the same __________. A. atomic radius
B. energy level of outer electrons
C. nuclear charge
D. number of valence electrons

Answers

I think the correct answer from the choices listed above is option D. Elements in the same group have the same number of valence electrons. They have the same number of electrons in the outer orbital. They are the electrons that are involved with chemical bonding with other elements.
Elements in the same group have D. Same number of valence electrons.
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