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3 years ago

Which statement best describes the motion of

Chemistry

1 answer:

Veseljchak [2.6K]3 years ago

4 0

The dye molecules move in a directed way from high to low concentration

Explanation:

The statement that best describes the motion of dye molecule in water is directed from a region of high to low concentration. The motion of the particles of the dye in water is described as diffusion:

diffusion is the movement of molecules of a substance from one position to another.
diffusion occurs from a region of high concentration to that of a low concentration.
the dye in the water solution causes an increase in concentration of an area where it is dropped.
this causes the particles to spread outward in the solution.
a concentration gradient is set up between the two parts of the solution.
this gradient facilitates the movement of the dye particles.

Learn more:

diffusion brainly.com/question/6873289

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The activity of a certain isotope dropped from 3200 ci to 800 ci in 24.0 years. what is the half-life of this isotope (in years)

Alexxx [7]

Ln(800/3200) = - kt
t = 24 years.
ln(0.25) = -k*24
(- 1.3863) = -k*24
1.3863 / 24 = k
0.05776 = k

ln(0.5) = -k*t
-0.6931 = - 0.05776 t
12 = t

I don't know if you can just look at the question and know the answer. If 24 years is a quarter life then is it obvious that the 1/2 life is 12 years? It might be, but the method I've used works for sure.

3 0

3 years ago

What is 2000 converted to scientific notation

Tpy6a [65]

2 x 10 ^ 3
should be the answer ^ 3 is the exponent

3 0

3 years ago

Read 2 more answers

The heating curve shows the energy gain of a substance as it changes from solid to gas. Which section of the graph shows the liq

Schach [20]

Answer:

C. C

Explanation:

The heating curve is a graphical representation shows that how different phases of substances change as it is influenced by the increase in temperature or heat.

Section A represents solid phase, Section B represents solid-liquid phase, section C represents liquid phase, section D represent liquid-gas phase and section E represents gas phase.

Section C of the graph shows the liquid phase of the substance gaining kinetic energy. During Phase C, heat energy is absorbed and liquid particles gain kinetic energy to change into gas form that is section E.

Hence, the correct option is C.C.

7 0

3 years ago

What is a major problem with CFCs?

oksian1 [2.3K]

The major problem with CFCs is that It is a greenhouse gas, Option A is correct.

Chlorofluorocarbons (CFCs) are nontoxic, nonflammable chemicals containing atoms of carbon, chlorine, and fluorine.

They are used in the manufacture of aerosol sprays, blowing agents for foams and packing materials, as solvents, and as refrigerants.

CFCs are classified as halocarbons, a class of compounds that contain atoms of carbon and halogen atoms

The major problem with CFC's is that they are green house gases

It destroys ozone in the upper atmosphere (stratosphere).

CFCs can produce more than 10,000 times as much warming, pound for pound, once they are in the air.

It is not only because of their dramatic warming potential but also

They were found to be the primary cause of the rapidly escalating destruction of the Earth’s ozone layer,

which protects the planet from dangerous, cancer-causing levels of ultraviolet radiation.

Therefore The major problem with CFCs is that It is a greenhouse gas, Option A is correct.

To know more about CFC'S

brainly.com/question/14330630

#SPJ1

6 0

2 years ago

What are the final or new substances (molecule) in a chemical equation called?

PilotLPTM [1.2K]

Final or new substances in a chemical equation will be called PRODUCT!. hence the substances itself are reactants. hope it helps a bit.

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3 years ago