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1 year ago

Which of the following statements is true for a system at chemical equilibrium?

Chemistry

1 answer:

ZanzabumX [31]1 year ago

4 0

Answer:

Option B is true: The system can do no work

Explanation:

a. The system releases energy at a steady rate. False

In thermodynamic equilibrium there are no net macroscopic flows of matter or of energy, either within a system or between systems.

b. The system can do no work. True

If the connection between the systems allows transfer of energy as heat but does not allow transfer of matter or transfer of energy as work, the two systems may reach thermal equilibrium without reaching thermodynamic equilibrium.

c. The system consumes energy at a steady rate. False.

In thermodynamic equilibrium there are no net macroscopic flows of matter or of energy, either within a system or between systems.

d. The kinetic energy of the system is zero. False.

At maximum displacement from the equilibrium point, potential energy is a maximum while kinetic energy is zero. At the equilibrium point the potential energy is zero and the kinetic energy is a maximum. At other points in the motion the oscillating body has differing values of both kinetic and potential energy.

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Show that the Newton has the units of mass times acceleration

Dimas [21]

F = ma = (kg)(m/s2) = kg ´ m/s2 N

hope this helps :D

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2 years ago

Analyze and solve this partially completed galvanic cell puzzle. There are 4 electrodes each identified by a letter of the alpha

klasskru [66]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The correct option is $E_{cell}__{AC}} = 0.94$

Explanation:

From the question we are told that

the cell voltage for AD is $E_{cell}__{AD}} = 1.56V$

From the data give we can see that

$E_{cell}__{AD}} - E_{cell}__{BD}} = E_{cell}__{AB}}$

i.e $1.56 - 1.53 = 0.03$

In the same way we can say that

$E_{cell}__{AD}}-E_{cell}__{CD}} = E_{cell}__{AC}}$

=> $E_{cell}__{AC}}=1.56- 0.62$

$E_{cell}__{AC}} = 0.94$

5 0

1 year ago

Quartz,SiO2,contains 46.7% silicon. What mass of silicon is present in 381 g of quartz?

swat32

Answer:

119 g.

Explanation:

4 0

2 years ago

Classify the following as qualitative or quantitative statements, giving your reasons. (a) The sun is approximately 93 million m

omeli [17]

Answer:

a) quantitative

b) qualitative

c) quantitative

d) qualitative

e) quantitative

Explanation:

a) it is a quantitative statement, since it uses the concepts of limits and aproxximation in the calculation to give its estimate.

b) it's a qualitative statement, beacause its an appreciation of someone who thinks that one's work ist better than another's.

c) it is a quantitative statement, since it is an expression that is mathematically demonstrated,

d) it's a qualitative, beacuse it'a a simple opinion of someone.

e) it is a quantitative statement, since this expression is demonstrated in real life and helps to save

8 0

2 years ago

. If one mole each of CH4, NH3, H2S, and CO2 is added to 1 liter of water in a flask (1 liter of water = 55.5 moles of H2O), how

denpristay [2]

1 litre of water is = 55.5 moles of water.
water is H2O
so, in water:
moles of oxygen = 55.5
moles of hydrogen = 2 x 55.5 = 111

Now, 1 mole each of CH4, NH3, H2S, and CO2 are added:
For CH4:
moles of C = 1
moles of H = 4 x 1 = 4

For NH3:
moles of N = 1
moles of H = 3 x 1 = 3

For H2S:
moles of H = 2 x 1 = 2
moles of S = 1

For CO2:
moles of C = 1
moles of = 2 x 1 = 2

Now, add the total moles of each atom:
Hydrogen = 111 + 4 + 3 +1 = 119 moles
Oxygen = 55.5 + 2 = 57.5
Carbon = 1+1 = 2
Sulfur = 1
nitrogen = 1

6 0

2 years ago