CHEMISTRY HIGH SCHOOL

At STP, which sample contains the same number of molecules as 3.0 liters of hydrogen gas?

Answers

Answer 1
Answer: 1. 5.6 L of NO2(g)
2. 7.5 L of H2(g)
3. 11.2 L of N2(g)
4. 22.4 L of CO(g)

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The graph above compares three states of a substance.Which of the following choices would NOT be an appropriate label for the y-axis?


A. motion of particles.

B. density of particles.

C. randomness of particles.

D. kinetic energy of particles.

Answers

Answer: is C

Explanation:

Final answer:

The most appropriate label for the y-axis in a graph comparing states of substances would be related to changes that occur in different states of matter, such as kinetic energy or motion. The label 'density of particles' would not be appropriate, as it doesn't significantly vary between states.

Explanation:

The appropriate label for the y-axis on a graph that compares three states of a substance might typically be something directly related to those states, such as kinetic energy of particles, motion of particles, or randomness of particles. These labels reflect changes that occur in different states of matter. When substances change state, there are changes in the arrangement and motion of the particles.

By contrast, density of particles would not be an appropriate label. Density, in this sense, is not a property that varies significantly between different states of a substance. The density of a substance in its solid, liquid, or gaseous state does not refer to the density of the individual particles themselves, but to the density of the substance as a whole (mass/volume).

Learn more about Graph Labeling here:

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A substance with a definite shape and volume is a ___ phase of matter

Answers

Explanation:

Matter in which molecules have strong force of attraction are held tight together. Therefore, to break this force of attraction strong force is required.

This type of matter is know as solid. Also, it is known that solid substances have definite shape and volume.

Thus, we can conclude that a substance with a definite shape and volume is a  solid phase of matter.
I would say solid shape of matter.

Substances made of two or more elements which are not chemically bonded are known as

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Substances that are not chemically bonded are mixtures.

Which solution would most likely cause a plant placed in it to become firmer and more rigid? A. hypertonic B. hypotonic C. isotonic D. osmotic

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"Hypotonic" is the one solution among the choices given in the question that would most likely cause a plant placed in it to become firmer and more rigid. The correct option among all the options that are given in the question is the second option or option "B". I hope the answer has come to your great help.

Which is an example of a response?a. water lost from the lungs during breathing
b. ivy growing around the pole of a fence
c. the angle of the sun changing during the day
d. outside temperature dropping at night

Answers

The anwser is B.ivy growing aroung the pole of a fence I just took this test

Which two properties are used to define matter? A.has mass and conducts heat
B.has buoyancy and volume
C.has mass and takes up space
D.conducts energy and has characteristic properties

Answers

The two properties which are used to define matter are that it has massand it takes up space. The other properties do not necessarily apply toeach matter. Such some matter can be a conductor of heat (such as metal)and some not (such as non metals). Likewise, some matter can be buoyantand float on liquid of density more than it but others would not on theliquids of density less than it. In-fact not all the matters areconductors of energy (such as heat, sound, electricity) or at-least avery poor conductor of energy and tend to find application asinsulating agents (non conductors). So the only thing which isnecessarily true is that the matter would definitely have mass in eventheir minutest form as atom and would take up some space.
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