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3 years ago

A student repeats a reaction several times to test the effects of various

Chemistry

2 answers:

Nookie1986 [14]3 years ago

8 0

Answer:

C) Decreasing the concentration would decrease the reaction rate.

Explanation:

A.P.E.X

motikmotik3 years ago

7 0

Decreasing the concentration would decrease the reaction rate (option c)

The aforementioned statement is due to the fact that when a substance's concentration is high, it will quickly perform the chemical reaction as there are more particles reacting with one another. Conversely, if there is less of a concentration, then the reaction rate would decrease as there are little particles reacting with one another.

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What is it called when moon is between setting and rising

miv72 [106K]

Answer:

I hope this link helps you.

Explanation:

http://astronomy.swin.edu.au/cosmos/P/Phases

4 0

3 years ago

Using the standard reduction potentials, Pb 2+(aq) + 2e– => Pb(s), E° = –0.13 V Fe 2+(aq) + 2e– => Fe(s), E° = –0.44 V Zn

mojhsa [17]

Answer:

Pb(s), Fe(s) and Zn(s) will reduce $Mn^{3+}$ to $Mn^{2+}$

Fe(s) and Zn(s) will reduce $Cr^{3+}$ to $Cr$

Explanation:

Standard reduction potential denotes ability to consume electrons from another species.

Hence, higher the standard reduction potential, higher will be the ability to oxidize another species.

Metal with $E_{red}^{0}$ value lower than 1.51 V will donate electron to $Mn^{3+}$ and thus reduces $Mn^{3+}$ to $Mn^{2+}$ .

So, Pb(s), Fe(s) and Zn(s) will reduce $Mn^{3+}$ to $Mn^{2+}$ .

Metal with $E_{red}^{0}$ value lower than -0.40 V will donate electron to $Cr^{3+}$ and thus reduces $Cr^{3+}$ to $Cr$ .

So, Fe(s) and Zn(s) will reduce $Cr^{3+}$ to $Cr$ .

6 0

3 years ago

What does each row (across) have in common?

Nastasia [14]

Row or periods have in common is the valence electron count. The valence electron count goes up as you move across the periodic table. Also atomic size gets smaller as you move from left to right

3 0

3 years ago

A mirage is caused by the bending of light rays as they pass through air layers of different densities.

taurus [48]

Answer:

T. True

Explanation:

The correct answer would be yes, this statement is true. A mirage is cause by refraction.

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2 years ago

The physical properties of matter produce many cause and effect relationships. Which effort is produced by the close packing of

stepan [7]

Answer:

Explanation:

We know quite well that there are three states of matter. Solid,liquid and gaseous states.

While the gaseous states gives the highest freedom of movement, the solid state gives the least freedom of movement. Molecules and atoms of a solid are so tightly packed.

This makes them very dense as they are held together by strong intermolecular forces of attraction. These strong forces prevents the movement of the particles.

As these particles are strongly attracted towards each other, they tend to be incompressible.

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3 years ago