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3 years ago

A phase diagram assumes ______ is kept constant

Chemistry

2 answers:

bogdanovich [222]3 years ago

8 0

The answer is b i think

asambeis [7]3 years ago

8 0

Pressure

Hope that helps <3

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If the value of kc at 25oc is 3.7108, and the equilibrium concentrations for n2 and h2 are 0.000105 m and 0.0000542 m, respectiv

frez [133]

Equation of decomposition of ammonia:

N2+3H2->2NH3

Euilibrium constant:

Kc=(NH3)^2/((N2)((H2)^3))

As concentration of N2=0.000105, H2=0.0000542

so equation will become:

3.7=(NH3)^2/(0.000105)*(0.0000542)^3

NH3=√(3.7*0.000105*(0.0000542)^3)

NH3=7.8×10⁻⁹

So concentration of ammonia will be 7.8×10⁻⁹.

5 0

3 years ago

In which situation would hydrogen bonding be present?

Varvara68 [4.7K]

Answer:

Explanation:

hydrogen Bond exist between ammoia, hydrogen fluoride and water so the answer is c

5 0

3 years ago

How matter moves from the beginning to the end of this food chain.

vfiekz [6]

Answer:

we need the food chain to answer the question.

4 0

3 years ago

A voltaic cell is constructed with two silver-silver chloride electrodes, where the halfreaction is AgCl (s) + e- → Ag (s) + Cl-

densk [106]

Answer: The cell potential of the cell is +0.118 V

Explanation:

The half reactions for the cell is:

Oxidation half reaction (anode): $Ag(s)+Cl^-(aq.)\rightarrow AgCl(s)+e^-$

Reduction half reaction (cathode): $AgCl(s)+e^-\rightarrow Ag(s)+Cl^-(aq.)$

In this case, the cathode and anode both are same. So, $E^o_{cell}$ will be equal to zero.

To calculate cell potential of the cell, we use the equation given by Nernst, which is:

$E_{cell}=E^o_{cell}-\frac{0.0592}{n}\log \frac{[Cl^{-}]_{diluted}}{[Cl^{-}]_{concentrated}}$

where,

n = number of electrons in oxidation-reduction reaction = 1

$E_{cell}$ = ?

$[Cl^{-}]_{diluted}$ = 0.0222 M

$[Cl^{-}]_{concentrated}$ = 2.22 M

Putting values in above equation, we get:

$E_{cell}=0-\frac{0.0592}{1}\log \frac{0.0222M}{2.22M}$

$E_{cell}=0.118V$

Hence, the cell potential of the cell is +0.118 V

6 0

3 years ago

Which of the following is not true about the dilution of a solution?

Ksju [112]

The answer is C, the volume decreases. that is wrong

4 0

3 years ago