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valentinak56 [21]
3 years ago
14

Suggest why helium can be used as a carrier gas but oxygen cannot.

Chemistry
2 answers:
SCORPION-xisa [38]3 years ago
7 0
Because helium is lighter then the oxygen .and due to this helium gass carrier go upward easily .
Inga [223]3 years ago
6 0
Helium is lighter then the oxygen and due to this helium gas carrier go upward easily .
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Which kingdom does a multicellular living organism most likely belong to?
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Answer:

the answer is Fungi

Explanation:

it makes its own food and doesn't move from place to place that why this is the answer

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The octet rule states that atoms will gain, lose, or share valence electrons to get a full outer shell (orbital). Explain in you
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Answer:

In covalent bonding, the octet rule is important because sharing electrons gives both atoms a full valence shell. As a result, each atom can consider the shared electrons to be part of its own valence shell.

np :)

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2 years ago
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What is 11/6 + 11/6 in fractions
Andreyy89
3 2/3 is your answer
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What is the pH of .0003 M of NaOH
s344n2d4d5 [400]

We are given that the concentration of NaOH is 0.0003 M and are asked to calculate the pH

We know that NaOH dissociates by the following reaction:

NaOH → Na⁺ + OH⁻

Which means that one mole of NaOH produces one mole of OH⁻ ion, which is what we care about since the pH is affected only by the concentration of H⁺ and OH⁻ ions

Now that we know that one mole of NaOH produces one mole of OH⁻, 0.0003M NaOH will produce 0.0003M OH⁻

Concentration of OH⁻ (also written as [OH⁻]) = 3 * 10⁻⁴

<u>pOH of the solution:</u>

pOH = -log[OH⁻] = -log(3 * 10⁻⁴)

pOH = -0.477 + 4

pOH = 3.523

<u>pH of the solution:</u>

We know that the sum of pH and pOH of a solution is 14

pH + pOH = 14

pH + 3.523 = 14                              [subtracting 3.523 from both sides]

pH = 10.477                        

8 0
3 years ago
Which of these compounds would you expect to be most soluble in water? ch3ch2cl ch3ch2ch2ch3 ch3ch2ch2f ch3ch2ch2oh?
Montano1993 [528]

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Explanation :

Water is a polar solvent and can dissolve polar molecules. This is based on the principle "Like dissolves like".

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The remaining compounds are polar, but Ch3CH2CH2OH shows greater solubility in water owing to presence of hydrogen bonding.

Hydrogen bonding is a type of intermolecular force that gets formed when a compound has hydrogen atom directly attached to highly electro-negative N, F or O atom.

When CH3CH2CH2OH is dissolved in water, it forms hydrogen bonds with water molecules. Due to this hydrogen bonding, the molecule shows greater solubility.

Therefore CH3CH2CH2OH is the most soluble compound in water

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