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
DanielleElmas [232]
2 years ago
9

(Yield Problem)

Chemistry
1 answer:
alex41 [277]2 years ago
5 0

Answer:

Percent Yield Fe  =  82.5%

Explanation:

The actual yield is the value produced after an experiment is conducted. The theoretical yield is the value calculated using the balanced chemical equation and atomic/molar masses.

To find the percent yield of iron (Fe), you need to (1) convert grams Al to moles Al (via atomic mass), then (2) convert moles Al to moles Fe (via mole-to-mole ratio from equation coefficients), then (3) convert moles Fe to grams Fe (via atomic mass), and then (4) calculate the percent yield. It is important to arrange the ratios in a way that allows for the cancellation of units. The final answer should have 3 sig figs to reflect the sig figs of the given values.

Atomic Mass (Mg): 24.305 g/mol

Atomic Mass (Fe): 55.845 g/mol

3 Mg + 2 FeCl₃ -----> 2 Fe + 3 MgCl₂

20.5 g Mg           1 mole              2 moles Fe            55.845 g
-----------------  x  -----------------  x  ----------------------  x  -----------------  =  
                           24.305 g           3 moles Mg             1 mole

=  31.4 g Fe

                                     Actual Yield
Percent Yield  =  ----------------------------------  x  100%
                                 Theoretical Yield

                               25.9 g Fe
Percent Yield  =  --------------------  x  100%
                               31.4 g Fe

Percent Yield  =  82.5%

You might be interested in
What is the mechanism by which Ozone is formed in the presence of sunshine?
katovenus [111]
Stratospheric ozone is formed naturally through the interaction of UV radiation with molecular oxygen.

not sure if this is what you want but hope it helps!!!
8 0
3 years ago
A bowling ball is pushed with a force of 22.0 N and accelerates at 5.5 m/s^2 what is the mass of the bowling ball?
Kruka [31]

Data:

F (force) = 22.0 N

m (mass) = ? (in Kg)

a (acceleration) = 5.5 m/s²

We apply the data to the Resultant Force formula, we have:

4.0 kg

I hope this helps. =)

7 0
3 years ago
An isotope of cesium has 55 protons and 78 neutrons. What is the mass number of this isotope?
mixer [17]

The only stable caesium isotope is 133Cs, with 78 neutrons.

Hope this answers your Q

4 0
3 years ago
please help me please
Musya8 [376]

Answer:

Two advantages are: Its cheap and it is a renewable energy source. Two disadvantages are it's not windy everyday and it will take up a lot of space for windmills.

Explanation:

4 0
3 years ago
Hola alguien me puede ayuda esto no se como
Readme [11.4K]
Para convertir c a kelvin
K=c +273
Ósea que en vez de c vas a poner el número

Para de Kevin a Celsius
C=k - 273
6 0
2 years ago
Other questions:
  • Complete and balance the following oxidation-reduction reactions, which give the highest possible oxidation state for the
    5·1 answer
  • WILL GIVE BRAINLY
    7·1 answer
  • Lewis structures for the perchlorate ion (ClO4−) can be drawn with all single bonds or with one, two, or three double bonds. Dra
    15·1 answer
  • Why is dilute, not concentrated, hydrochloric acid used during preparation of cyclohexaanol?
    9·1 answer
  • What is the volume of gas at 2.00atm and 200.0K if its original volume was 300.0L at 0.25atm and 400.OK?
    5·1 answer
  • An unknown weak acid with a concentration of 0.530 M has a pH of 5.600. What is the Ka of the weak acid
    13·1 answer
  • How many moles are in 272 grams of hydrogen peroxide (H2O2) ?
    5·1 answer
  • Choose a music instrument. Describe the types of energy involved in playing the instrument. State whether playing the instrument
    7·1 answer
  • Which of the following explains this observation?
    13·1 answer
  • 2. Most species fail in new environments because of.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!