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irinina [24]
3 years ago
9

Of the choices below, which is true for the relationship shown? It is Ka for the acid H3P2O72−. It is Kb for the acid H3P2O72−.

It is Ka for the acid H2P2O72−. It is Kb for the acid H2P2O72−.
Chemistry
2 answers:
Naily [24]3 years ago
3 0
The expression for the Ka for the given acid is:

Ka = [H2P2O7^2-] [H3O+] /[H3P2O7^2-]

<span>Ka is the acid dissociation constant or the acidity constant. It is a measure of the acid strength when in solution. It is an equilibrium constant for the dissociation of the acid.</span>
Anastasy [175]3 years ago
3 0

Answer:

A. It is Ka for the acid H3P2O72−

Explanation:

#platolivesmatter

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You take a bottle of soft drink out of your refrigerator. The contents are liquid and stay liquid, even when you shake them. Pre
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Answer:

The correct answer is due to the difference in pressure inside and outside the bottle.

Explanation:

Liquids have melting and boiling points that depend on pressure and temperature. The pressure inside the bottle is higher than the pressure outside. This causes the melting point to drop, making the liquid freeze at a lower temperature than if it were at atmospheric pressure, and therefore has a lower temperature than it would freeze at atmospheric pressure. When the bottle is uncovered, the liquid becomes an atmospheric pressure, and due to the temperature acquired when the bottle was closed the liquid freezes.

Have a nice day!

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3 years ago
The steps of scientific method in order are?
ArbitrLikvidat [17]
The answer is choice B
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3 years ago
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A 76.0-gram piece of metal at 96.0 °C is placed in 120.0 g of water in a calorimeter at 24.5 °C. The final temperature in the ca
anygoal [31]

Answer:

S(metal) = 0.66J/g°C

Explanation:

We can find specific heat of a material, S, using the equation:

q = m*S*ΔT

<em>Where q is change in heat, m is the mass of the substance, S specific heat and ΔT change in temperature.</em>

The heat given by the metal is equal to the heat that water absorbs, that is:

m(Metal)*S(metal)*ΔT(Metal) = m(Water)*S(water)*ΔT(water)

<em>Where:</em>

m(Metal) = 76.0g

S(metal) = ?

ΔT(Metal) = 96.0°C-31.0°C = 65.0°C

m(Water) = 120.0g

S(water) = 4.184J/g°C

ΔT(water) = 31.0°C-24.5°C = 6.5°C

Replacing:

76.0g*S(metal)*65.0°C = 120.0g*4.184J/g°C*6.5°C

S(metal) = 0.66J/g°C

<em />

The law of conservation applies because the energy is not been created or destroyed. The energy that the metal gives is absorbed by the water.

3 0
2 years ago
As the atomic number increases, the number of _ _, too.
Morgarella [4.7K]

Answer:

Protons

Explanation:

The atomic number represents the number of protons. Therefore, as the atomic number increases, the number of protons does too.

I hope this helps! :)

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2 years ago
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Ludmilka [50]

Answer:

Individual versus nature

Explanation:

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