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eduard
3 years ago
14

Can someone help me with this question please? I don’t understand molarity

Chemistry
1 answer:
lozanna [386]3 years ago
8 0

Answer:

4.7L

Explanation:

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Neutralizing an olympic size swimming pool is conceptually very similar to performaing a massive titration experiment. Suppose a
MrRissso [65]

Answer:

6,97x10⁻³ gallons

Explanation:

pH is defined as:

pH = -log [H⁺]

Thus, you need to have, in the end:

10⁻⁷ = [H⁺]

And you have, in the first:

10^{-9,33} = [H⁺]

The volume of swimming pool is:

700'000 galllons ×\frac{3,78541 L}{1 gallon} = 2649787 L

Thus, the moles of H⁺ in the first and in the end are:

First:

10^{-9,33}mol/L × 2649787L = 1,24x10⁻³ moles

End:

10^{-7}mol/L × 2649787L = 0,265 moles

Thus, the moles of H⁺ you need to add are:

0,265 - 1,24x10⁻³ = <em>0,26376 moles</em>

These moles comes from 10M HCl, thus, the volume in gallons you need to add are:

0,26376moles*\frac{1L}{10moles}* \frac{1gallon}{3,78541L} =

<em>6,97x10⁻³ gallons</em>

<em></em>

I hope it helps!

7 0
3 years ago
How many molecules units are in 4.5 moles of CF4
kobusy [5.1K]
1.0 mole ---------- 6.02x10²³ molecules
4.5 moles -------- ?

4.5 * 6,02x10²³ / 1.0

= 2.709x10²⁴ molecules units
7 0
3 years ago
How many pi bonds are in the oxalate ion (C2O42-)?
suter [353]

Answer:there are 13

Explanation:

4 0
2 years ago
What observations can you make about this group of people? Name one inference you can make from your observations.​
Stells [14]

Answer:

no no no who are these some look good but are black what is this

7 0
2 years ago
Read 2 more answers
Is naf an acidic, basic, or neutral solution?
lara31 [8.8K]
Its a base

as Na+ dissociates in the water and it has no basic nor acidic properties its neutral]

but the F- that also dissociates has certain basic properties 

hope that helps 
4 0
3 years ago
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