CHEMISTRY HIGH SCHOOL

Which of the following is not a stressor that causes a change in equilibrium?a. change in pressure
b. change in temperature
c. change in particle size
d. change in concentration

Answers

Answer 1
Answer: The correct answer to the question that is being presented above would be letter c. change in particle size. Changes in pressure, temperature, and concentration are stressors that cause change in chemical equilibrium.
Answer 2
Answer:

Answer:

Particle Size

Explanation:

Educere/ Founder's Education Answer

Related Questions

Which subatomic particles each have a negative electrical charge?A) protonsB) neutronsC) electrons
element x has an electron configuration of 1s²2s²2p⁶3s¹, while element z has an electron configuration of 1s²2s²2p⁵. a) which element would have greater first ionization energy? b) which element would have a larger radius? c) which element would have higher electronegativity? d) which element would form an ion that has a larger radius? e) which element would release more energy when it gains an electron?
How many moles are in 68.5 liters of oxygen gas at STP?
Do you think the saying “faster, better, cheaper” refers more to the work of a scientist or engineer? Explain
Which set of conditions is most likely to allow a gas to be considered as an “ideal” gas?(A) low P, low T (B) low P, high T (C) high P, low T (D) high P, high T (E) all of these The answer is B because low pressure means less gas interaction and high temperature means the same?

Which describes the role of sunlight in chemical reactions?

Answers

photosynthesis  generally a photochemical reaction.

25 Which of the following is a correct statement describing photosynthesis?

Plants make glucose and oxygen by taking in carbon dioxide and water.
Plants take in oxygen and carbon dioxide to make glucose and water.
Plants take in oxygen and water to make carbon dioxide and glucose.
Plants take in glucose and carbon dioxide to make water and oxygen.

26

Under what condition will a marshmallow and a rock fall at the same speed?

In the water
The marshmallow must be thrown down with greater force
This can never happen, because of the different masses
In a vacuum

27

Which of the following would exert about 1000 Newtons of force?

A baby
A large man
A safety pin
A dump truck

Answers

25: A) Plants make glucose and oxygen by taking in carbon dioxide and water. 
26: D) In a vacuum
27: B) A large man (1000 newtons is approximately 224 lbs of force)

16 Which change results in the formation of different substances?(1) burning of propane(2) melting of NaCl (s)
(3) deposition of CO2(g)
(4) solidification of water

Answers

Answer:The correct answer is option (1).

Explanation:

Burning of propane in the presence of oxygen will form carbon-dioxide, water and heat.The chemical reaction can represented as in chemical equation:

C_3H_8+5O_2\rightarrow 3CO_2+4H_2O+heat

This is an example of chemical change where new product is formed.

Where as in melting of sold sodium chloride, deposition of carbon-dioxide gas and solidification of water ;phase of the substance is changing that is a physical change is taking place.

Hence, the correct option is (1).
1. The burning of propane creates different substances: propane and oxygen combine to create water and carbon dioxide:

C3H8 + 5 O2 becomes 3 CO2 + 4 H2O + heat

2. When NaCl melts, it is changing state, but it is still the same NaCl.

3. When gaseous CO2 deposits it is changing state, but it is still the same CO2.

4. When (presumably liquid) water solidifies, it is changing state, but it is still the same water.

So the answer is 1.

What type of chemical bond links the monomers in a polymer?

Answers

alkenes such as ethene have at least one double bond in their chains and these join to make a polymer called polyethene but alkanes like ethane have only single bonds 

Which temperature change would cause the volume of a sample of an ideal gas to double when the pressure of the sample remains the same?

Answers

Following the ideal gas law PV = nRT, and changing it in terms of temperature, we get T = PV/nR. When volume of a sample of an ideal gas to double when the pressure of the sample remains the same, the temperature doubles because temperature is directly proportional with pressure and volume.

Which process is accompanied by a decrease in entropy?(1) boiling of water(2) condensing of water vapor(3) subliming of iodine(4) melting of ice

Answers

The correct answer is option 2. Condensing water vapor is accompanied by a decrease in entropy. Entropy is the degree of disorderliness in a system. We know that among all phases the most ordered is solid which means it has the least entropy while the opposite is the gas phase. 

Answer:

2) condensing of water vapor

Explanation:

Entropy is the measure of disorder in a system. Disorder means how "separated" and distanced the molecules, particles, etc. are from each other. Solids and crystals have rigid structures meaning that they have less disorder than gases and liquids that have free structures. Gases and liquids have a higher disorder than solids and crystalline structures. An increase in entropy means that the disorder is increasing; more heat and energy are being added. A decrease in entropy means that the disorder is decreasing and the structure becomes more rigid and ordered; less heat and energy are being added. So the condensing of water vapor means that disorder is decreasing, thus the entropy is decreasing.

I hope this makes sense :)
Other Questions
Which element has 32 protons in its nucleus?
Si un alcohol primario se calienta a una temperatura mayor de 140-C en presencia de H2SO4 concentrado, que es el catalizador, se obtiene el alqueno correspondiente más agua. Si se hace la anterior reacción con el alcohol 1 -butilico, la ecuación que representa el proceso es
In what situation would an interviewer want to provide the interviewee a list of questions before the interview ?a. When the questions are technical and may require some research from the interviewee.c. When the interviewer is looking for a spontaneous response from the interviewee.b. When the interviewee is shy.d. none of these
A geographical area where plants, animals, the landscape and the climate all interact together is called a(n)environment. ecosystem. biome. food web.