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
Sidana [21]
3 years ago
10

Consider the equation ∆G = –nFE, where F = 9.648533289 x 104 C/mol. Given that n is the mole of e– transferred and the following

relationships, prove that ∆G will be in units of Joules.
Chemistry
1 answer:
myrzilka [38]3 years ago
5 0

Answer:

See explanation below.

Explanation:

In the equation  ∆G = –nFE,  E is the electromotive force ( cell potential ) in Volts.

Now in turn a Volt is defined as the potential difference that will impart one joule of energy per coulomb of charge that moves through two points.

V = J/C where J is Joules and C is coulombs of charge

Therefore in terms of units the equation will give us units of Joules:

[ mol] x [C/mol] x [J/C] = [J]

You might be interested in
A scientific conclusion is best supported by results
aleksklad [387]

Answer:

A scientific conclusion is best supported by results that are replicated through multiple trials.

Explanation:

3 0
3 years ago
Read 2 more answers
What is the atomic mass of w
solniwko [45]

Answer:

183.84 u

Explanation:

W (also known as "Tungsten") atomic number is 74 and atomic mass is   183.84 u

4 0
2 years ago
The molar absorptivity for aqueous solutions of phenol at 211 nm is 6.17x103L/mol/cm. Calculate the linear range of phenol conce
Scilla [17]

Explanation:

The given data is as follows.

          \lambda = 211 nm,          \sum = 6.17 \times 10^{3} mol/L/cm

           l = 1 cm,             7% < Transmittance < 85%

Suppose the aqueous solution follows Lambert-Beer's law. Therefore,

                   Absorbance = -log \frac{\text{Percentage transmittance}}{100}

Hence, for 7% transmittance the value of absorbance will be as follows.

                  Absorbance = -log \frac{7}{100}

                           A_{1} = 1.155

For 85% transmittance the value of absorbance will be as follows.

                 Absorbance = -log \frac{85}{100}

                           A_{2} = 0.07058

According to Lambert-Beer's law.

                  A = \sum \times l \times C

where,       A = absorbance

                 \sum = molar extinction coefficient

                 C = concentration

Therefore, concentration for 7% absorbance is as follows.

                    A_{1} = \sum \times l \times C_{1}

                  C_{1} = \frac{1.155}{6.17 \times 10^{3} \times 1}

                                  = 0.187 \times 10^{-3} mol/L

                                  = 0.187 mmol/L

Concentration for 85% absorbance is as follows.

                   A_{2} = \sum \times l \times C_{2}

                  C_{2} = \frac{0.07058}{6.17 \times 10^{3} \times 1}

                                  = 0.01144 \times 10^{-3} mol/L

                                  = 0.01144 mmol/L

Thus, we can conclude that linear range of phenol concentration is 0.01144 mmol/L to 0.187 mmol/L.

6 0
3 years ago
1. a) Anthony and Joseph create a start up company to make batteries for electric cars. Iron(III) phosphate is needed to create
Elenna [48]

Answer:

 LR is Na₃PO₄  

Explanation:

A quick way to determine the limiting reactant in a process is to convert reactant values to moles and then divide by the respective coefficient of the balanced equation. The smaller number of the division is the limiting reactant. For the given reaction, the rxn ratio of reactants is 1:1 so only the smaller mole value gives limiting reactant. However, if the reaction is NOT 1:1 the one must divide by respective coefficient to identify the smallest value and the limiting reactant.

This problem:

                          FeCl3(aq)          +    Na3PO4(aq)   => FePO4(s) + 3 NaCl(aq)

Given:                  27.8g                          61.9g

moles:        27.8g/162.2g/mole      1.9g/163.94g/mole

                    = 0.1714 mole               = 0.0116 mole

÷ coef.         => 0.1714/1 = 0.1714      => 0.0116/1 = 0.0116

smaller value is LR => =>  =>  =>  => => LR is Na₃PO₄              

Hope this helps. Doc :-)    

3 0
3 years ago
A substance that contains various elements or compounds without bonding or fixed proportions is a(n) _____.
Flauer [41]
Is a mixture! .......
8 0
3 years ago
Read 2 more answers
Other questions:
  • What type of intermolecular forces exist between br2 and ccl4?
    11·1 answer
  • Please help I will reward brainly
    11·2 answers
  • What volume of 0.05 mol/L HCl is required to react with 5.00g of manganese dioxide according to this equation?
    8·1 answer
  • A substance that produces a hydronium ion when dissolved in water is called a/an A. base. B. indicator. C. reactant. D. acid.
    5·2 answers
  • A small star becomes a white dwarf and a large star becomes a neutron star or black hole
    10·1 answer
  • How do systems impact creation?
    5·1 answer
  • Reaction type <br> __HCl + __Mg -&gt; __MgCl2 + __H2
    7·1 answer
  • In a coffee cup calorimeter, 1.60 g NH4NO3 was mixed with 75.0 grams of water at an initial temperature of 25.00* Celsius. After
    13·1 answer
  • How many molecules are in a 6.82 gram sample of Hydrogen Sulfide (H2S)
    13·1 answer
  • calculate the average atomic mass of lead based on the given data and the atomic masses. isotope atomic mass (amu) percent abund
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!