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3 years ago

WILL MARK YOU THE BRAINLIEST IF YOU ANSWER THESE TWO QUESTION CORRECTLY :)

Chemistry

1 answer:

lara [203]3 years ago

7 0

Answer: 1. HYDROCARBONS? 2. ALKANES?

i'm not exactly AMAZING at this but i did some research and this is what i think it is i'm also not in this grade but i tried.

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Answer:

C. porous

hope it helps!!!

please mark as the brainliest if it is correct!

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2 years ago

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3 years ago

<img src="https://tex.z-dn.net/?f=%5Ctext%7BThis%20is%20for%20a%20school%20project.%20I%20just%20need%20help%20on%20these%20two%

BigorU [14]

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Explanation:

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2 years ago

Standard: PKS2

HACTEHA [7]

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3 years ago

What is the ph of a solution of 1.0 × 10-9 m naoh (include 1 digit after the decimal in your answer)?

Eduardwww [97]

Answer:

$pH=5$

Explanation:

Hello,

In this case, for the dissociation of the sodium hydroxide into sodium and hydroxyl ions we have:

$NaOH\rightarrow Na^++OH^-$

Which is a 100% dissociation as sodium hydroxide is a strong base, therefore, the concentration of the hydroxyl ions are 1.0x10⁻⁹. For that reason, the pOH could be computed as:

$pOH=-log([OH^-})=-log(1.0x10^{-9})=9$

Finally, from the definition of pH, we have:

$pH+pOH=14\\pH=14-pOH=14-9\\pH=5$

Best regards.

3 0

3 years ago

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