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
Mila [183]
3 years ago
6

For the reaction, 2Cr2+ + Cl2(g) ---> 2Cr3+ + 2Cl- Ecell (standard conditions) = 1.78V

Chemistry
1 answer:
Lapatulllka [165]3 years ago
5 0

Answer:

Eºcell = -1.78 V

Explanation:

The Eº cell is an intensive property, i.e they do not depend on the quantity of material present and the desired reaction in our problem  is exactly half the reverse of the one given, the Eºcell will then  be the negative of the first then Eºcell is -1.78 V and the redox reaction will be non-spontaneous as opposed to the first.

You might be interested in
A student mixed some yellow sulfur powder with some iron filings. She was able to take the iron out of the sulfur by using a mag
Kay [80]

Answer: Chemical change

Explanation:

Physical change is a change in which there is no rearrangement of atoms and thus no new substance is formed. There is only change in physical state of the substance. The change can be reversed using physical methods.

Chemical change is a change in which there is rearrangement of atoms and thus new substance is formed. There may or may not be a change in physical state. The change can only be reversed using chemical methods.

Thus when iron and sulfur are heated in a test tube, the chemical change occurs and thus lead to formation of new substances which could not be separated using magnet.

8 0
2 years ago
Is soap polar or no polar explain
kifflom [539]
Soap is polar because it is not symmetrical in molecularly, this is because it must react with whats on your hand to fully clean it , dish soap is nonpolar/polar in order to combat grease which is also nonpolar, so nonpolar cleans nonpolar and polar cleans polar
4 0
3 years ago
Read 2 more answers
The half-life of a first-order reaction is 13 min. If the initial concentration of reactant is 0.085 M, how long would it take u
olasank [31]

Answer: It will take 8.2 minutes until the concentration decreases to 0.055 M

Explanation:

The time after which 99.9% reactions gets completed is 40 minutes

Explanation:

Expression for rate law for first order kinetics is given by:

t=\frac{2.303}{k}\log\frac{a}{a-x}

where,

k = rate constant

t = age of sample

a = let initial amount of the reactant

a - x = amount left after decay process  

a) for completion of half life:

Half life is the amount of time taken by a radioactive material to decay to half of its original value.

t_{\frac{1}{2}}=\frac{0.693}{k}

k=\frac{0.693}{13min}=0.053min^{-1}

b)  Time taken for 0.085 M to decrease to 0.055 M

t=\frac{2.303}{0.053}\log\frac{0.085}{0.055}

t=8.2min

Thus it will take 8.2 minutes until the concentration decreases to 0.055 M

5 0
3 years ago
How do you know if a boy likes you
arlik [135]

Answer:

ok so He asks you questions to see if you're available. ...

He makes lots of eye contact when you speak. ...

He slows his walking pace to meet yours. ...

He's always telling you jokes. ...

He offers to help you out. ...

He turns his body toward you. ...

His friends try to leave the two of you alone.

Explanation:

5 0
3 years ago
Read 2 more answers
Find the number of atom in 1.50g of c
Aleonysh [2.5K]
Atomic mass Carbon (C ) = 12.01 a.m.u

12.01 g ---------- 6.02x10²³ atoms
1.50 g ----------- ??

1.50 x ( 6.02x10²³ ) / 12.01 =

7.51x10²² atoms of C

hope this helps!

6 0
2 years ago
Other questions:
  • if you had a house with bot copper and zinc galvanized iron water pipes, which metal would be oxidized first? Why would this be
    9·2 answers
  • If you can smell your grandmother’s perfume from across the room, you are experiencing the result of which liquid property?
    7·1 answer
  • A primary purpose of conducting a hazardous materials exercise is to find out:
    9·1 answer
  • Which of the following polyatomic ions has a 3- ionic charge?
    11·1 answer
  • A 1.540 gram sample of an alloy containing only tin and zinc was reacted with excess fluorine gas to produce 2.489 grams in tota
    15·1 answer
  • Convert the following sentence into an equation and balance it.
    6·1 answer
  • Which process is making the pots handle hot?
    11·2 answers
  • Conversation 13kg into gram<br>4 poi ts<br>​
    7·1 answer
  • You add 8.5 g of iron to 27.90 mLof water and observe that the volume of iron and water together is 28.98 mL calculate the densi
    12·1 answer
  • When liquid bromine is cooled to form a solid, which of the following types of solid would it form?.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!