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3 years ago

When the concentration of hydronium ions equals the concentration of hydroxide ions, it is called the _____.

2 answers:

8 0

When the concentration of H₃O⁺ becomes equal to the concentration of OH⁻ ions, it is called the Neutral Solution.

Example:
A neutral water with pH 7 contains Hydronium and Hydroxyl ions in following number,

[H₃O⁺] = 1.0 × 10⁻⁷ M

[OH⁻] = 1.0 × 10⁻⁷ M

Ugo [173]3 years ago

4 0

It is called the EQUAVALENCE POINT. It is the titration!

Had a test and this was therefore the correct answer.

Hope this helped. :)

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WILL AWARD BRAINLIEST!!! PLS HELP!!!

Rom4ik [11]

Answer:

they are named like electron group geometry

Explanation:

do not know how to type a Lewis dot diagram

8 0

3 years ago

Explain the relationship between the mole, particles, grams, and Liters.

Mamont248 [21]

Answer:A mole is an arbitrary number of molecules in a single unit - refer to avogadro's number. Essentially, 1 mole is 6.022x10^23 molecules for ALL molecules or atoms, however one must remember that not all atoms/molecules are the same size, this is where mass comes into play. When you measure out 2 grams of carbon powder, there will be a lot more molecules present than if you weighed out 2 grams of thorium powder; this is because carbon is much smaller - kind of like a car filled with clowns, one given car can hold a lot of small clowns but only a few big ones; so the same volume is occupied but the amount of substance (clowns) varies on their own size. The arbitrary mass (relative to the hydrogen atom) for a molecule is the sum of its atomic components' atomic masses; e. g. C2H6's will have 2x12.00 (carbon) + 6x1.01 (hydrogen) = ~30 grams / mole.

Explanation:

8 0

3 years ago

___________ polymers can be produced in large quantities at low cost. please. thank you.

MA_775_DIABLO [31]

Answer:

Plastic polymers

Explanation:

Plastic polymers are usually made up of synthetic and semi-synthetic polymers such as polyethylene, polystyrene etc.

Plastic polymers have a unique property called malleability. Malleability is the ability of a substance to be moulded into different sizes and shapes.

When hear is applied plastics gets soft and can be molded into different forms and then it becomes hardened after exposure to air(dried).

The plastic polymers are usually very cheap to produce in large quantities which is why it is very common in industries.

5 0

3 years ago

Investigations were carried out in a science lab to explore the topic of chemical and physical changes. Investigation A Step 1.

ozzi

Answer:

Investigation B, Step 2

Explanation:

The colour change is a good indication of a chemical change. The sugar molecules were most likely changing into something else.

Investigation A, Step 1. Wrong. The dissolving of salt is a physical process.

Investigation A, Step 2. Wrong. You simply boiled off the water (a physical process) and recovered the salt.

Investigation B, Step 1. Wrong. The dissolving of sugar is a physical process.

4 0

3 years ago

Read 2 more answers

A saturated solution of Pb(IO3)2 in pure water has a lead ion concentration of 5.0 x 10-5 Molar. What is the Ksp value of Pb(IO3

Orlov [11]

Answer:

Option (E) is correct

Explanation:

Solubility equilibrium of $Pb(IO_{3})_{2}$ is given as follows-

$Pb(IO_{3})_{2}\rightleftharpoons Pb^{2+}+2IO_{3}^{-}$

Hence, if solubility of $Pb(IO_{3})_{2}$ is S (M) then-

$[Pb^{2+}]=S(M)$ and $[IO_{3}^{-}]=2S(M)$

Where species under third bracket represent equilibrium concentrations

So, solubility product of $Pb(IO_{3})_{2}$ , $K_{sp}=[Pb^{2+}][IO_{3}^{-}]^{2}$

Here, $[Pb^{2+}]=S(M)=5.0\times 10^{-5}M$

So, $[IO_{3}^{-}]=2S(M)=(2\times 5.0\times 10^{-5})M=1.0\times 10^{-4}M$

So, $K_{sp}=(5.0\times 10^{-5})\times (1.0\times 10^{-4})^{2}=5.0\times 10^{-13}$

Hence option (E) is correct

7 0

3 years ago