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NANDANI KUMARI • asked a question

Following reactions occur at cathode during the electrolysis of aqueous copper (II) chloride solution:

Cu2+(aq) + 2 e-2 ———–> Cu(s) E = + 0.34 V

H+(aq) + e-1 ————-> 1/2H2(g) E = 0.00 V

On the...

SinceECu2+/CuECu2+/Cuhas a greater positive value thanEH+/HEH+/H, the reaction that is feasible at the cathode is

Cu2+(aq)+2eCu(s)

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Mattrab Community - SXC • asked a question


Log2aa=x    then, a=(2a)x  ......(1)

Log3a2a=y    then,2a=(3a)y ......(2)

Log4a 3a=z  then, 3a=(4a)z ......(3)

So, 

a=(2a)x  [from (1)]

Or, a=(3a)xy    [from(2)]

Or, a=(4a)xyz     [from(3)]

Multiplying both sides by 4a,

4a.a=4a.(4a)xyz  

Or,(2a)² =(4a)xyz + 1 

Or,(3a)2y =(4a)xyz+1 

Or,(4a)2yz =(4a)xyz+1 

Or, 2yz = xyz+1 .proved.



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Puspak Sah • asked a question

Difference between Gram-Atomic mass(g atom) and Gram Molecular mass(g mole).

The difference between Gram atomic  mass and Gram atomic molecular are given below:

Gram atomic mass

Gram molecular mass

1.The mass of 6.023 x 1023 atoms of one mole atom of any element when expressed in terms of grams is called gram atomic mass.

1.The mass of 6.023 x 1023 molecules or 1 mole molecule of any substance expressed in grams is called gram molecular mass.

2.It is used to calculate the mass of an atom.2. It is used to calculate the mass of a molecule/molecular compound.
3. It is...
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Sarthak Shakya • over 3 years ago

Voices inside the head


It kills you from inside,

Haunts every night

Echoes inside the head

Like demons calling from hell.

Paint a smile

Of no joy

Keep moving

Thinking you will find what lacks behind.

Say, Hi! To your friends

Give them a smile

Yes, I’m proud of you, boy

Even it kills you from inside.

Your girlfriend left you at the edge

What a fucking disgrace!

Now you even can’t concentrate

Your study going down the drain.

R u thinking of expressing...

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Rahul Yadav

Omg,💓💓

Reply over 3y
Rakesh Yadav • over 2 years ago

Minds unite in Mattrab's domain,

Questions asked, wisdom to gain.

A community's bond, knowledge's reign,

Inquiry sparks, enlightenment's terrain.

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Kaushal Ghimire • almost 3 years ago

The Moon

Silent and still, the moon shines bright
In the dark, clear sky
Peaceful and calm, the night
A soothing balm to the weary eye

The moon, a glowing orb of light
Illuminates the path ahead
As the night wind whispers through the trees
And the stars twinkle overhead

So let us lay down and rest
And let the moon and night provide
The peacefulness and solitude
That we all need to feel alive

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Sachin Shrestha • over 2 years ago

F1 Visa Experience


Status: Approved

Date: July 19, 2023

Consulate: Kathmandu, Nepal

Major: Computer Science

Scholarship: 31k

COA after scholarship: 23k

VO: Straight hair

Time: 08:15


I reached the US embassy about an hour earlier than the appointment time. Hundreds of applicants were waiting for the gate to open and about 75% of them were for tourist visas. My turn was after about 50-60 applicants. I was very nervous in the beginning, so I...

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Surakshya Pandey

Congratulations Sachin!!

Reply 6mo

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