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uranmaximum [27]
2 years ago
11

A.

Chemistry
1 answer:
Andru [333]2 years ago
7 0

Answer:

Where is the question?

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The melting point of h2o is 0 degrees celsius. this is the same as its:
professor190 [17]
This is the same as its freezing point

hope this helps
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To what volume in millimeters must 50.0 mL of 18.0 M H2SO4 be diluted to obtain 4.35 M H2SO4?
poizon [28]
We know that to relate solutions of with the factors of molarity and volume, we can use the equation: M_{1}  V_{1} = M_{2}  V_{2}

**NOTE: The volume as indicated in this question is defined in L, not mL, so that conversion must be made. However it is 1000 mL = 1 L.

So now we can assign values to these variables. Let us say that the 18 M H_{2}  SO_{4} is the left side of the equation. Then we have:

(18 M)(0.050 L)=(4.35M) V_{2}

We can then solve for V_{2}:

V_{2}= \frac{(18M)(0.05L)}{4.35M} and V_{2} =0.21 L or 210 mL

We now know that the total amount of volume of the 4.35 M solution will be 210 mL. This is assuming that the entirety of the 50 mL of 18 M is used and the rest (160 mL) of water is then added.


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Potassium hydroxide, KOH, is considered a _____________ in an acid-base reaction because it ___________ a hydrogen ion to/from t
siniylev [52]
Answer: Potassium hydroxide, KOH, is considered a <u>BASE</u> in an acid-base reaction because it <u>ACCEPTS</u> a hydrogen ion from the other reactant.

According to Brønsted–Lowry acid–base theory, Base is a specie which accepts proton (H⁺) while, Acid is a specie which donate proton.

Bases
may contain a negative charge or lone pair of electrons, while, Acids contain positive charge or a neutral atom with incomplete octet.

In given statement KOH is acting as a base because it contains a negatively charged hydroxyl group which can accept proton from a acid, i.e.

                                    KOH    →     K⁺  +  OH⁻

Reaction of OH⁻ with any acid,

                         K⁺    +   OH⁻  +   HCl      →       H₂O   +   KCl
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3 years ago
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Famous people who talked about plastic water bottles
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Marisa Miller, supermodel and surfer
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James Cameron, Director of Terminator, Titanic and Avatar
Supports ocean conservation and played a key part in getting president Obama to create the world’s largest ocean sanctuary.

Miguel Bosé, singer
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Top 10 celebrities that care about the oceans

Adrian Grenier, actor and director
Passionate ocean advocate reducing his use of single use plastics and appeal for everyone to commit to “conscious consumption” through changing personal habits.

Pierce Brosnan, actor
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Jack Johnson, singer
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Almudena Fernández, model and eco-activist
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Leonardo DiCaprio, actor
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Richard Branson, businessman
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Jason Mraz, musician
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