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3 years ago

Balance the following equation: Na+H₂O ➞ NaOH+H₂ *

Chemistry

1 answer:

Nostrana [21]3 years ago

5 0

Answer:

4 4 8 4 is the balanced equation

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What appears to happen to the moon as it goes through the cycle ?

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Answer:

The moon appears to change forms

Explanation:

As it rotates around Earth, sunlight only hits half of the moon which creates that impression

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3 years ago

Anemia _____.

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$Answer ☘️$

can be prevented by eating iron-rich foods

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2 years ago

Calculate the equilibrium constant for the following reaction: Co2+ (aq) + Zn(s> CO (s) + Zn2+ (aq)

Simora [160]

Answer: The $K_{eq}$ of the reaction is $1.73\times 10^{16}$

Explanation:

For the given half reactions:

Oxidation half reaction: $Zn(s)\rightarrow Zn^{2+}+2e^-;E^o_{Zn^{2+}/Zn}=-0.76V$

Reduction half reaction: $Co^{2+}+2e^-\rightarrow Co(s);E^o_{Co^{2+}/Co}=-0.28V$

Net reaction: $Zn(s)+Co^{2+}\rightarrow Zn^{2+}+Co(s)$

Oxidation reaction occurs at anode and reduction reaction occurs at cathode.

To calculate the $E^o_{cell}$ of the reaction, we use the equation:

$E^o_{cell}=E^o_{cathode}-E^o_{anode}$

Putting values in above equation, we get:

$E^o_{cell}=-0.28-(-0.76)=0.48V$

To calculate equilibrium constant, we use the relation between Gibbs free energy, which is:

$\Delta G^o=-nfE^o_{cell}$

and,

$\Delta G^o=-RT\ln K_{eq}$

Equating these two equations, we get:

$nfE^o_{cell}=RT\ln K_{eq}$

where,

n = number of electrons transferred = 2

F = Faraday's constant = 96500 C

$E^o_{cell}$ = standard electrode potential of the cell = 0.48 V

R = Gas constant = 8.314 J/K.mol

T = temperature of the reaction = $25^oC=[273+25]=298K$

$K_{eq}$ = equilibrium constant of the reaction = ?

Putting values in above equation, we get:

$2\times 96500\times 0.48=8.314\times 298\times \ln K_{eq}\\\\K_{eq}=1.73\times 10^{16}$

Hence, the $K_{eq}$ of the reaction is $1.73\times 10^{16}$

8 0

3 years ago

The table above shows data from a laboratory experiment in which Andrew measured conclusion from this experiment?

puteri [66]

We know that the particles in a matter have energy. They have kinetic energy, potential energy, chemical energy, electrical energy etc.

When we give heat to a matter it gains energy and there is an increase in its internal energy. Or we can say that particles in a matter have more energy at higher temperature than particles in a matter at low temperature

As ice is formed below zero degree celsius so the particles in ice must have lesser energy than water at higher temperature.

Thus true statement will be

The particles in boiling water have more energy than the particles in ice water do.

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4 years ago

How many moles of NaCl are equivalent to 15.6 grams of NaCl

NeX [460]

One mole of NaCl has a mass of approximately 58.5 grams. This gives it a conversion factor of 1/58.5

Hope This Helped

4 0

4 years ago

Balance the following equation: __Na+__H₂O ➞ __NaOH+__H₂ *

Balance the following equation: Na+H₂O ➞ NaOH+H₂ *