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Ronch [10]
4 years ago
11

100 POINTS ANSWER FAST

Chemistry
2 answers:
alex41 [277]4 years ago
8 0
I believe the answer is a because 2 times 12 is 24. Hope this helped
love history [14]4 years ago
8 0
If im Correct it may be A, 24M
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What is the concentration of OH − and pOH in a 0.00066 M solution of Ba ( OH ) 2 at 25 ∘ C? Assume complete dissociation.
Allushta [10]

<u>Answer:</u> The hydroxide ion concentration and pOH of the solution is 1.32\times 10^{-3}M  and 2.88 respectively

<u>Explanation:</u>

We are given:

Concentration of barium hydroxide = 0.00066 M

The chemical equation for the dissociation of barium hydroxide follows:

Ba(OH)_2\rightarrow Ba^{2+}+2OH^-

1 mole of barium hydroxide produces 1 mole of barium ions and 2 moles of hydroxide ions

pOH is defined as the negative logarithm of hydroxide ion concentration present in the solution

To calculate pOH of the solution, we use the equation:

pOH=-\log[OH^-]

We are given:

[OH^-]=(2\times 0.00066)=1.32\times 10^{-3}M

Putting values in above equation, we get:

pOH=-\log(1.32\times 10^{-3})\\\\pOH=2.88

Hence, the hydroxide ion concentration and pOH of the solution is 1.32\times 10^{-3}M  and 2.88 respectively

3 0
4 years ago
Why do polar molecules have a greater tendency to remain a liquid or a solid at room temperature?
castortr0y [4]
Polar molecules are molecules wherein the atoms do not share an electron equally in a bond especially a covalent bond. Due to this unequal sharing of the electrons, a dipole would form where a part would have a partial positive charge and the other end would have a partial negative charge. Having both the partial positive and the negative charges, the molecules of the substance would have a tendency to hold each other. As a result, polar molecules would exist at room temperature as liquids or solids rather than existing as gas. Examples are water, sugar, ethanol and hydrochloric acid.
7 0
4 years ago
The distance between two bonded atoms (the bond length), is usually in units of picometers, where 1.00 m = 1.00 x 1012 pm (or 1.
8090 [49]

Answer:

7.52 × 10⁻¹⁴ mi

Explanation:

Step 1: Given data

Bond length between two carbon atoms (l): 121 pm

Step 2: Convert "l" to meters

We will use the conversion factor 1.00 m = 1.00 × 10¹² pm.

121 pm × (1.00 m / 1.00 × 10¹² pm) = 1.21 × 10⁻¹⁰ m

Step 3: Convert "l" to miles

We will use the conversion factor 1.00 mi = 1609.34 m.

1.21 × 10⁻¹⁰ m × (1.00 mi / 1609.34 m) = 7.52 × 10⁻¹⁴ mi

4 0
4 years ago
A monosaccharide that consists of 5 carbon atoms, one of which is in a ketone group, is classified as a(n) _______
Elenna [48]

A monosaccharide that consists of 5 carbon atoms, one of which is in a ketone group, is classified as a(n) ketopentose.

Ketone family

The suffix "-one" is added after locating the carbonyl group and, if necessary, designating it with a location number. Ketones are given their common names by first identifying the alkyl groups linked to the carbonyl (in alphabetical order), followed by the prefix "ketone." Several Regular Ketones. The three most significant ketones in terms of scale are acetone, methyl ethyl ketone, and cyclohexanone. Though less frequently than in general organic chemistry, they are still widespread in biochemistry. The simplest ketone is dimethyl ketone, or CH3COCH3, often known as acetone.

To learn more about the ketone group refer here:

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5 0
2 years ago
Write a paragraph, citing examples from the text, to explain how Dr.
grigory [225]

Paul J. Chirik developed methods associated with chemistry catalysis and transition metals, which may result useful for the development of manufacturing technologies.

<h3>What is catalysis?</h3>

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Proteins (enzymes) are biological catalysts that increase the rate of chemical reactions in biological systems.

Catalysis may be reached by using transition metals (e.g., actinium and rutherfordium), which result useful in the development of manufacturing technologies.

Learn more about catalysis here:

brainly.com/question/12507566

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2 years ago
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