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4 years ago

When an atom in a reactant gains electrons, what happens to its oxidation number?

Chemistry

1 answer:

skelet666 [1.2K]4 years ago

6 0

Answer:

Its oxidation number decreases.

Explanation:

Reduction is gaining electrons

Fe +3 + e = Fe+2

oxidation number went from 3 to 2

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If the [H+] in a solution is 1 × 10–1 mol/L, what is the [OH–]? Show your work.

AVprozaik [17]

Hello!

The basic equations to solve this is
pH = -log[H+]
pOH = -log[OH-]
pH + pOH = 14
------------------------------------------------------------------------------------------------------
Find pH

pH = -log(1 * 10^-1)
pH = 1
------------------------------------------------------------------------------------------------------
Find pOH
1 + pOH = 14

pOH = 13
------------------------------------------------------------------------------------------------------
Find OH-
[OH-] = 10^(-pOH)
[OH-] = 1 * 10^-13mo/L

The answer is $[OH-] = 1 * 10^{-13} mol/L$

Hope this helps!

3 0

4 years ago

Resonance Structures are ways to represent the bonding in a molecule or ion when a single Lewis structure fails to describe accu

AleksandrR [38]

Answer:

See explanation

Explanation:

A Lewis structure is also called a dot electron structure. A Lewis structure represents all the valence electrons on atoms in a molecule as dots. Lewis structures can be used to represent molecules in which the central atom obeys the octet rule as well as molecules whose central atom does not obey the octet rule.

Sometimes, one Lewis structure does not suffice in explaining the observed properties of a given chemical specie. In this case, we evoke the idea that the actual structure of the chemical specie lies somewhere between a limited number of bonding extremes called resonance or canonical structures.

The canonical structure of the carbonate ion as well as the lewis structure of phosphine is shown in the image attached to this answer.

8 0

3 years ago

Is the volume of water measured using the graduated cylinder identical to the volume calculated

tatuchka [14]

<h2>Answer:</h2>

The volume of water measured using the graduated cylinder is <em>not exactly identical </em> identical to the volume calculated.

<h3>Explanation:</h3>

Calculated volume is theoretical value calculated from the density and mass of water.

But volume measured in cylinder can contain the personal error of individual.

Because in graduated cylinder volume is measured in a specific way that is:

Place the graduated cylinder on a flat surface and view the height of the liquid in the cylinder with your eyes directly level with the liquid.
The liquid will tend to curve downward.
This curve is called the meniscus.
Always read the measurement at the bottom of the meniscus.

3 0

4 years ago

Please help noowwwww... if you don’t know please don’t answer

pshichka [43]

Answer:

i honetly dont thing anyone knows that so look it up

Explanation:

7 0

3 years ago

What type of energy results from the

jeka94

Answer:

C fghhtrsfeagutyrwraqedf

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3 years ago