Explore topic-wise InterviewSolutions in Current Affairs.

in an acidic medium

5H2C2O4 + 2KMnO4 + 3H2SO4 = K2SO4 +2MnSO4 + 10CO2 + 8H2O

V x M = 0.02 x .025 = 0.0005 (KMnO4)

By balanced equation 2 moles of KMnO4 REACTS with 5 moles of acid

1.25 x 10–3 MOL REACT completly

0.1 M x V = 1.25 x 10–3 mol

V = 12.5 mL of acid

hope helped !!!!

Spinel occurs in almost every color, and forms gems of all colors. It is not a well KNOWN gem,

although good specimens can attain very high prices. Bright red Spinel, known as Ruby Spinel, is

the most VALUABLE Spinel. In the past, there was no distinction between true Ruby and Ruby

Spinel, as they look very similar and are found together in the same localities. (Nowadays,

distinctions can be easily made through hardness and x-ray tests.) Many famous old "Rubies"

were found to actually be Spinel. The famous Black Prince's Ruby that forms the centerpiece of

the royal crown of Great Britain was DISCOVERED to be a Spinel rather then a Ruby.

Magnesium Spinel, often just known plainly as Spinel, is the most common and well-known

member of the Spinel series. Gahnite is also known among COLLECTORS, while the other two

members (Hercynite and Galaxite) are very rare and seldom represented in collections.

hope helped

Half-life PERIOD of a FIRST order reaction. Since k is a constant for a given reaction at a given temperature and the expression lacks any concentration TERM so from equation 3 it is evident that half-time of a 1st order reaction is a constant independent of INITIAL concentration of reactant.

EXPLANATION:

i SHALL the QUESTION LATER

सभी अणुओं में न्यूनतम मात्रा में ऊर्जा होती है। ऊर्जा गतिशील ऊर्जा या संभावित ऊर्जा के रूप में हो सकती है। जब अणु टकराते हैं, अणुओं की गतिशील ऊर्जा का उपयोग बॉन्ड को तोड़ने, मोड़ने और अंततः तोड़ने के लिए किया जा सकता है, जिससे रासायनिक प्रतिक्रियाएं होती हैं। Ifmolecules थोड़ा गतिशील ऊर्जा के साथ धीरे-धीरे आगे बढ़ते हैं, या अनुचित अभिविन्यास के साथ टकराते हैं, वे प्रतिक्रिया नहीं करते हैं और बस एक दूसरे से उछालते हैं। हालांकि, अगर अणु उचित टकराव अभिविन्यास के साथ पर्याप्त रूप से आगे बढ़ रहे हैं, जैसे टकराव पर गतिशील ऊर्जा न्यूनतम ऊर्जा बाधा से अधिक है, तो एक प्रतिक्रिया होती है। होने वाली रासायनिक प्रतिक्रिया के लिए न्यूनतम ऊर्जा आवश्यकता को पूरा किया जाना चाहिए जिसे सक्रियण ऊर्जा, EA कहा जाता है

Hey
Here your answer
☺️☺️☺️☺️☺️☺️☺️☺️☺️
_____________________
Electrolysisis the PROCESS of passing an ELECTRIC current through a substance in ORDER to PRODUCE chemical changes in the substance.

✌️✌️✌️✌️✌️✌️✌️✌️
Hope it HELPS you

1.Linear.

2.Freundlich.

3.Langmuir.

4.BET.

5.Kisliuk.

6.Adsorption enthalpy

7.Silica GEL.

For any element, its atomic mass in AMU is equal to the weight of 1 mole of the element in grams. For example, all NATURAL ISOTOPES of OXYGEN collectively have an atomic mass of15.999 AMU, so ONE mole of oxygen weighs exactly 15.999

a) 1/22.4 = 0.044643 moles

1.5 / X = 0.044643

1.5/0.044643 =33.60 G

Molar conductance = specific conductance × VOLUME of compound

Resistance = p _l_
A
1/p = _l_
A×R
conductivity =_l_
A×R

[ resistivity = 1/conductivity]

PLEASE MARK me as brainiest

Dekho bhai line spectrum samajhna koi bacchho ka Khel nhi hai bhai........lekin tumne pucha hai iska MATLAB tu thoda adult wala Banda lagta hai..........dekh bhai mere hisab se na.........

line spectrum can be prepared by heating the gases or vapours in Bunsen burner special type of light is emitted......when this line is passed through a prism ...this line SPLITS into component lights seperated from each other with each line having a particular WAVELENGTH.......the each line is so unique from all other lines........the lines in this experiment can be used to detect the element used as a gas in this experiment...............due to seperated lines ....the spectrum occurs discontinuos i.e. minor gaps are seen in between them......so this spectrum is CALLED line or discontinuous spectrum...........

BS bhai ye hai tumhara answer...........mere wale brainliest option pe hit marke DEKHNA ....mata Rani ashirvad degi.....

Coal , petroleum and DIESEL oil are EXHAUSTIBLE NATURAL resource .. because they are limited quantity. .as days are passing our demand is INCREASING and by over using one day it will became EXHAUSTED

Planck's QUANTUM number=> ONE Photon of light carries exactly one quantum of energy.
E=hf
Frequency of light=f
Planck's Constant=h
Energy of each PACKET or QUANTA =E

They are cyclic.

They are conjugated all around the ring. The easiest way to  put it is this: every atom in the ring MUST be able to participate in resonance. So atoms that have PI-BONDS, carbocations, or lone pairs are OK; but atoms with four single bonds are out. 

the molecule must have (4n+2) Pi electrons. This is just a different way of expressing the series (2,6,10,14, 18, etc. )**. Huckel’s RULE states that all aromatic molecules must satisfy this condition. Now, Pi electrons can either come from double bonds, or from lone pairs that can align themselves with the pi system. [What does 4n+2 mean?]

The molecule must be flat. This is generally assumed to be true for most molecules that meet the previous 3 conditions, except in cases where steric hindrance prevents it. An example is 

Note how pyridine (the third example) has a lone pair but it doesn’t “count” for purposes of aromaticity! More on that next time.

William sons ETHERE synthesis REACTION in which ALKYL chloride reacts with NaOR in the presence of DRY ethere

To REMOVE the BACTERIA

By,fractional distillation it is done by to HIGH the PRESSURE and to LOW the TEMPERATURE.

Chemistry branch of SCIENCE dealing with chemicals and chemical reactions .the branch of science CONCERNED with the substances of which matter is COMPOSED, the INVESTIGATION of their PROPERTIES and reactions, and the use of such reactions to form new substances is chemistry

It is FORCE of ATTRACTION between VALANCE electrons and the METAL ATOMS

This is ELECTRON DOT STRUCTURE

Here is your ANSWER the RATIO is 1:8

Because GOLD is a METAL.
and LUSTRE is the CHARACTERISTIC of a metal

................ph+O2

COBALTIC ethane-1,2-diamine

Hope it help to u


The number of moles in 1 LITRE = 1000 / 18.02 = 55.5 moles. 1 mole of water =6.022 x 10^23 molecules of water, So 55.5 moles of water = 55.5 x 6.022 x 10^23 = 3.34 x 10^25 molecules of water. The gram molecular mass of water is 18.02. Thus volume occupied by 1 H2O MOLECULE is ​2.99 ​×10-23 ml.

The VOLUME is22.4litres

Because the petroleum need to INCREASE its fire power and water CONTAIN the many AMOUNT of OXYGEN and fire is also need oxygen that is why water not put out caused by petroleum products

Yes because it is EASY to extract METAL from oxide ores FIR ex
ZnCO3 in presence of heat GIVES ZnO+
CO2
reduction
with carbon
ZnO+c=Zn+CO
hope it helps

Hey mate here is the answer
as if we HEAT more it get evaporated more and the water quantity decrease if we heat it less we can't get enough warmth and heat we can't be so cool in any season for long time it is difficult to stay and we get cold and fever
so,we should heat it in fixed temperature
hope it HELPS you if you like please MARK me as BRAINLIEST

Because in SODIUM formate negative FORMAL CHARGE of oygen GET equally delocalize
(i will explain in detail call me at 9709110443)

Bcoz MERCURY gain HEAT and raise TEMPERATURE

has a HIGH RANDOM ARRANGEMENT

In nickel the nuclear CHARGE is same as SCREENING effect. so ATOMIC radii is same.

Chloroform was gradually REPLACED in the first HALF of the 20th CENTURY by the safer (ALTHOUGH highly inflammable) ether, which is still used as an inexpensive anaesthetic today in some developing NATIONS...!!

Your ANSWER is SEDIMENTARY ROCKS.....

HOPE it HELPS you!!!

J.j THOMPSON DISAPPROVED it FIRST

The MASS of 2.8 LTRE of CO2 is 5.5g

I GIVE answer of this in previous QUESTION if you not understand then comment PLEASE MARK it brainleist

Answer:

Explanation:

Radius=0.529n^2/Z,where n is SHELL NUMBER and Z is atomic number.In first excited state,n=2 and Z=1So, radius is 0.529*4/1=2.116 Angstroms

Ahoy!!
----------

• Cobalt is placed before nickel in the modern periodic table because the atomic number of an element is equal to the number of protons present in that particular element. Cobalt has 27 protons while nickel has 28 protons.

• But the mass of cobalt is more than that of nickel because the isotopes of colbalt have higher mass than the mass of isotopes of nickel.

• we KNOW that atomic mass is equal to the average of TOTAL atomic masses of the isotopes.

• So, cobalt was placed after nickel in mendeleev periodic table which caused problems.


___________________________________