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SVEN [57.7K]
3 years ago
12

How do we know that air we breathe is matter?

Chemistry
2 answers:
Viefleur [7K]3 years ago
6 0
Because all matter has density and since air has density then air is matter and plus EVERYTHING is made of matter
daser333 [38]3 years ago
5 0

Nerves inside us. They send signals to our brains.

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a molecule always has two or more atoms

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If a solid is placed in a liquid and lots of bubbles are formed, what type of reaction has occurred?
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What determines a molecules VSEPR shape?
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3 years ago
Why is pyridine included in the reaction of an acid chloride and an amine or alcohol? Pyridine will deprotonate the amine or alc
Pavel [41]

Answer:

Pyridine will neutralize the acid by-product of the reaction.

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7 0
3 years ago
What volume (mL) of the partially neutralized stomach acid was neutralized by NaOH during the titration? (portion of 25.00 mL sa
almond37 [142]

The question is incomplete, here is the complete question:

What volume (mL) of the partially neutralized stomach acid having concentration 2 M was neutralized by 0.1 M NaOH during the titration? (portion of 25.00 mL NaOH sample was used; this was the HCl remaining after the antacid tablet did it's job)

<u>Answer:</u> The volume of HCl neutralized is 1.25 mL

<u>Explanation:</u>

To calculate the volume of acid, we use the equation given by neutralization reaction:

n_1M_1V_1=n_2M_2V_2

where,

n_1,M_1\text{ and }V_1 are the n-factor, molarity and volume of stomach acid which is HCl

n_2,M_2\text{ and }V_2 are the n-factor, molarity and volume of base which is NaOH.

We are given:

n_1=1\\M_1=2M\\V_1=?mL\\n_2=1\\M_2=0.1M\\V_2=25mL

Putting values in above equation, we get:

1\times 2\times V_1=1\times 0.1\times 25\\\\V_1=\frac{1\times 0.1\times 25}{1\times 2}=1.25mL

Hence, the volume of HCl neutralized is 1.25 mL

3 0
3 years ago
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