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dexar [7]
3 years ago
5

What does the number represent in the isotope platinum-194?

Chemistry
1 answer:
vazorg [7]3 years ago
4 0
The number in isotope platinum-194 stands for the <em>total </em>amount of protons and neutrons. In other words, this is the mass. =)
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Using the following data, determine the standard cell potential E^o cell for the electrochemical cell constructed using the foll
Nana76 [90]

Answer: C)  0.637 V

Explanation:

The balanced redox reaction is:

Zn(s)+Pb^{2+}(aq)\rightarrow Zn^{2+}(aq)+Pb(s)

Here Zn undergoes oxidation by loss of electrons, thus act as anode. Lead undergoes reduction by gain of electrons and thus act as cathode.

E^0=E^0_{cathode}- E^0_{anode}

Where both E^0 are standard reduction potentials.

Zn^{2+}(aq)+2e^-\rightarrow Zn(s)= -0.763

Pb^{2+}(aq)+2e^-\rightarrow Pb(s)= -0.126

E^0_{[Zn^{2+}/Zn]}=-0.763V

E^0_{[Pb^{2+}/Pb]}=-0.126V

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E^0=-0.126-(-0.763V)=0.637V

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8 0
3 years ago
Covalent bonds in a molecule absorb radiation in the IR region and vibrate at characteristic frequencies.
vazorg [7]

Answer:

Frequency=1.6\times 10^{12}\ Hz

Explanation:

The relation between frequency and wavelength is shown below as:

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Frequency=\frac{3\times 10^8}{188\times 10^{-6}}\ Hz

Frequency=1.6\times 10^{12}\ Hz

7 0
3 years ago
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mamaluj [8]

I think by writing electronic configuration.

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2 years ago
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iogann1982 [59]
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I need help use e picture that’s the question I’m stuck on pleassse
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Answer:

1.14 M

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grams/molar mass = ans. / volume

317/110.98=2.86/2.50=1.14 M

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5 0
3 years ago
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