1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
alexandr402 [8]
3 years ago
14

HELP ME PLS I NEED HELP

Chemistry
1 answer:
sesenic [268]3 years ago
3 0
Lol your answer is c
You might be interested in
Students are measuring the length of time it takes for soda to go flat at three different temperatures. Which type of graph shou
Akimi4 [234]
The answer would be a bar graph
3 0
3 years ago
The free energy change for the following reaction at 25 °C, when [Cr3+] = 1.32×10-3 M and [Fe3+] = 1.14 M, is 131 kJ: Cr3+(1.32×
larisa [96]

Answer:

E°cell = - 1.3575 V

This reaction is spontaneous in the reverse direction

Explanation:

The given cell reaction:

Cr³⁺(1.32 × 10⁻³ M) + Fe²⁺(aq) → Cr²⁺(aq) + Fe³⁺(1.14 M)

The given Gibbs free energy: ΔG = 131 kJ = 131 × 10³ J     (∵ 1 kJ = 10³ J)

As we know,

ΔG = - n F E°cell

Here, n - the number of moles of electrons transferred = 1

F - Faraday constant = 96500

E°cell - cell potential = ?

\therefore E^{\circ }_{cell} = -\frac{\Delta G}{n \: F} = -\frac{131\times 10^{3}\, J}{1\, mol\times96500 \, C.mol^{-1}}

\Rightarrow E^{\circ }_{cell} = -1.3575\, V

<u>For a given chemical reaction if-</u>

1. ΔG = negative and E°cell = positive

⇒ <em>The reaction is spontaneous and proceeds spontaneously in the forward direction.</em>

2.  ΔG = positive and E°cell = negative

⇒ <em>The reaction is non-spontaneous and proceeds spontaneously in the reverse direction.</em>

<u>Since, for this chemical reaction: </u>

Cr³⁺(1.32 × 10⁻³ M) + Fe²⁺(aq) → Cr²⁺(aq) + Fe³⁺(1.14 M)

ΔG = + 131 × 10³ J ⇒ positive

and, E°cell = - 1.3575 V ⇒ negative

<u>Therefore, this reaction is spontaneous in the reverse direction.</u>

6 0
3 years ago
Help please need to find the frequency of the wave
Lapatulllka [165]
E=hf h=6.63*10^-34 f=8.66*10^14 E=6.63*10^-34*8.66*10^14=57.4*10^-20 joules
3 0
2 years ago
What’s a tripping hazard in Science
attashe74 [19]
Spillages on a tiled floor, a highly polished floor surface, a damp smooth surface with no mat.
5 0
3 years ago
Read 2 more answers
5
sineoko [7]

Answer:

this answer is b no u can it very easy

Explanation:

because solid and liquid can compress easily

plz support me

4 0
2 years ago
Read 2 more answers
Other questions:
  • Sulfur undergoes combustion to yield sulfur trioxide by the following reaction equation:
    15·1 answer
  • The use of crucible​
    6·1 answer
  • You and your lab partner are asked to determine the density of an aluminum bar. The mass is known accurately to 4 significant fi
    8·1 answer
  • How are mass and gravitational pull related?
    6·2 answers
  • A liquid's freezing point is -38°C and it's boiling point is 357°C. What is the number of Kelvin between the boiling point and t
    6·1 answer
  • Consider the structure of the amino acid alanine. indicate the hybridization about each interior atom.
    6·2 answers
  • Los átomos que no poseen _______________ son conocidos como _________________ ________________. Los átomos que poseen carga se d
    7·1 answer
  • What is the amplitude of a wave?
    15·1 answer
  • What substance is oxidized in the following reaction? 4HCl + MnO2 → Cl2 + 2H2O + MnCl2
    7·1 answer
  • A gas at constant volume has a pressure of 4. 50 atm at 200. K. What will be the pressure of the gas at 250. K? 3. 60 atm 4. 60
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!