4 years ago

Is unobtainium easy to obtain?

2 answers:

5 0

No, its a highly desirable material that is hypothetical, scientifically impossible, extremely rare, costly, or fictional.

Rufina [12.5K]4 years ago

5 0

Answer:

Explanation:

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is a polyprotic acid. Write balanced chemical equations for the sequence of reactions that carbonic acid can undergo when it's d

Burka [1]

Answer:

H₂CO₃ H₂O ⇄ HCO₃⁻ + H₃O⁺ Ka1

HCO₃⁻ + H₂O ⇄ CO₃⁻² + H₃O⁺ Ka2

CO₃⁻² + H₂O ⇄ HCO₃⁻ + OH⁻ Kb1

HCO₃⁻ + H₂O ⇄ H₂CO₃ + OH⁻ Kb2

Explanation:

Formula for carbonic acid is: H₂CO₃

It is a dyprotic acid, because it can release two protons. We can also mention that is a weak one. The equilibrums are:

H₂CO₃ H₂O ⇄ HCO₃⁻ + H₃O⁺ Ka1

HCO₃⁻ + H₂O ⇄ CO₃⁻² + H₃O⁺ Ka2

When the conjugate strong bases, carbonate and bicarbonate take a proton from water, the reactions are:

CO₃⁻² + H₂O ⇄ HCO₃⁻ + OH⁻ Kb1

HCO₃⁻ + H₂O ⇄ H₂CO₃ + OH⁻ Kb2

Notice, that bicarbonate anion can release or take a proton to/from water. This is called amphoteric,

6 0

3 years ago

I am a cold planet on the surface but hot at my core. There are 11 rings that circle me. You will find 21 moons in orbit around

iren [92.7K]

Your answer is D Uranus because that's the only planet that rotates on its side besides that I'm going to say D.

4 0

3 years ago

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Which type of bond is formed by the transfer of electrons from one atom to another?

stira [4]

Chemical Bond
because they are chemically bonding

4 0

3 years ago

How does the strength of a metallic bond compared to other types of bonds?

Bess [88]

While metallic bonds have the strong electrostatic force of attractions between the cation or atoms and the delocalized electrons in the geometrical arrangement of the two metals. ... Metallic bonds are malleable and ductile, while covalent bonds and ionic bonds non-malleable and non-ductile.

7 0

3 years ago

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A sealed 5.00L flask contains an unknown gas at 1.05 atm and 296 K. How many moles of the unknown gas are in the flask?

xeze [42]

Moles of the unknown gas in the flask : 0.216

<h3>Further explanation</h3>

The gas equation can be written

$\large {\boxed {\bold {PV = nRT}}}$

where

P = pressure, atm

V = volume, liter

n = number of moles

R = gas constant = 0.08206 L.atm / mol K

T = temperature, Kelvin

V=5 L

P = 1.05 atm

T = 296 K

$\tt n=\dfrac{PV}{RT}\\\\n=\dfrac{1.05\times 5}{0.082\times 296}\\\\n=0.216$

8 0

3 years ago