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Explanation:

A COLLOID is a mixture in which one substance which has fine PARTICLES (dispersed phase) mixed into another substance (dispersion medium). The particles of the colloids have a range from 1 to 1000 NM in diameter. The solution is CALLED colloidal dispersion because the particles of solutions do not mix or settle down.

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ANSWER:

CHROMATOGRAPHY is the process to separate the COMPONENTS as WELL as to PURIFY them. It's basically used to separate components of ink.

ANSWER:

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Hey, there!

Here's the answer to the question.

Normality = Molarity × n-factor.

and

number of equivalence = Normality × volume

➡️ n factor for NaOH is 1 and for H2SO4 is 2.

(Now, refer to the attachment)

Conclusion: Since, the number of equivalence of both acid and BASE is same, they completely react to form salt. For this, the solution becomes neutral, i.e., pH = 7

Hope that helps.

Thanks.

ANSWER:

A] is the answer

I hope you get your answer

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ANSWER:

lone pair in 's' ATOM is 1 and in 'o' atom is 2and 3

ANSWER:

YES electronegativity affects the BOND length, more electronegativity b/w two atom LESS bond length. and the bond formed b/w two less electronegative atom is long length

Answer:

the voice raba is the best in the world and the new YORK times has been a great place to live and live in the past and the future of the world and the new world of music and the new world of music and music and music that we have to you and you can be

Explanation:

the FIRST thing I am doing is to childish and the people who have 5 or why do they want to you or grech to you or be a part of it and not be a GOOD NIGHT to you and be the ONE to you or to you and you can be a good person and be a part of your relationship with him and you can be very 3rd out as a good

ANSWER:

HF is such MOLECULE in which s-p OVERLAPPING OCCUR

Answer:

Reaction of Ethanol with PCL5,

C2H5OH + PCL5 --> C2H5CL + HCL + POCL3

Hence, here HCl, Ethyl chloride and Phosphorus oxychloride is formed.

So, Ethyl chloride will be the halide group in this case.

# Hope this is CORRECT!

Due to evaporation

Explanation:

Due to fine pores present on this surface. The water comes out through them and they absorb the HEAT ENERGY from its surrounding. This is why the water present inside BECOMES cool.

Answer:

The symbol (aq) REPRESENT aqueous solution in a chemical equation.

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ANSWER:

MOLARITY= no. of MOLES of solute/vol of SOLN in LITRE

Answer:Alcl3

Explanation:according to Fajan RULE more the CHARGE on CATION more is distorsion of ELECTRON CLOUD hence more is covalent character..

Answer:

water , alcohol,SUGAR are EXAMPLES of inter and INTRA molecular HYDROGEN bonds

ANSWER:

Mg2+O2--------MgO

Explanation:

I HOPE it HELPS you

Acc. To me,

Your ANSWER is   a

----------------------------------------------

T=18°=291K

750torr=0.98atm

110/122.5=MOLE of kclo3

1mole kclo3--------------3 mole O2

110/122.5 mole------------3*110/122.5 mole O2

3*110/122.5 mole O2------------3/2*110/122.5 mole O

PV=nRT

0.98atm*V=3/2*110/122.5*0.0821*291

V=approx 32.4L

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I hope you UNDERSTAND my answer

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LET U be the total internal ENERGY

When 400kJ work is DONE, internal energy becomes (U-400)kJ

When 150kJ heat is GIVEN, internal energy becomes U-400+150=U-250

Hence the internal energy decreases by 250

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ANSWER:

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Explanation:

do you ASK only the STRUCTURE know ???

ANSWER:

CaO+Co2 =CaO2

at HIGHER temperature when calcium CARBONATE with an excess of HYDROCHLORIC acid,Calcium chloride, cardon dioxide(Co2)and water vapours are produced

1st

Explanation:

L cannot be EQUAL to N

Answer:

NEWTON has made three laws of motion

law of inertia

law of MOMENTUM

law of FORCES of action and REACTION

Answer:

50 PERCENTAGE is the PURITY of NAOH is

Answer:

examples are COPPER carbonate can be BROKEN down on heating

Explanation:

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जिंक आक्साइड को कार्बन के साथ गर्म करके धातु में अपचयित किया जा सकता है परन्तु क्रोमियम आक्साइड को नही क्योंकि क्रोमियम जिंक आक्साइड की तुलना में उच्च सक्रियता श्रेणी में है। केवल मध्य सक्रियता श्रेणी में आने वाले धातु अयस्कों को ही कार्बन के साथ गर्म करके धातु में अपचयित किया जा सकता है।

अतः अपनी उच्च सक्रियता श्रेणी के कारण क्रोमियम आक्साइड को कार्बन के साथ धातु में अपचयित नही किया जा सकता।

Answer:

75%in AIR NITROGEN and0. 2% WATER VAPOUR in water

ANSWER:

atoms which are tightly PACKED are CALLED SOLID

Answer: The molecular formula will be

Explanation:

If percentage are given then we are taking TOTAL mass is 100 grams.

So, the mass of each element is equal to the percentage given.

Mass of C= 54.55 g

Mass of H = 9.09 g

Mass of O = 36.36 g

STEP 1 : convert given masses into moles.

Moles of C =

Moles of H =

Moles of O =

Step 2 : For the mole ratio, divide each value of moles by the smallest number of moles calculated.

For C =

For H =

For O =

The ratio of C : H: O= 2: 4:1

Hence the empirical formula is

The empirical weight of = 2(12)+4(1)+1(16)= 44g.

The molecular weight = 88 g/mole

Now we have to calculate the molecular formula.

The molecular formula will be=

हैबर विधि (Eiaber's PROCESS) द्वारा अमोनिया की लब्धि बढ़ाने के लिये आवश्यक परिस्थितयां इस प्रकार हैं।

• यदि N₂ और H₂ की सान्द्रता उच्च करते हैं तो अधिक अमोनिया प्राप्त होगी।
• अधिक अमोनिया के उत्पादन के लिये उच्च दाब अर्थात 200–900 ATM होना चाहिये।
• अभिक्रिया के ऊष्मापेक्षी होने के कारण कम ताप (700K) पर अधिक अमोनिया प्राप्त होगी।
• अमोनिया को समय-समय पर निकालते रहने से लब्धि बढ़ती जाती है।
• K₂O और Al₂O₃ युक्त आयरन ऑक्साइड जैसे उत्प्रेरकों का थोड़ी सी मात्रा में उपयोग भी लब्धि बढ़ाने में सहायक हो सकता है।

Answer:

SODIUM and POTASSIUM are highly REACTIVE metals and react vigorously with oxygen present in the air such that it may even catch fire. Sodium does not reactwith kerosene; this is the REASON for preserving sodium in kerosene

CHEMISTRY :-

the branch of SCIENCE conserved with SUBSTANCE and matter...

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ANSWER:

the value simply is a^2

Explanation:

only the magnitude of the VECTOR is being is asked.so if we CONSIDER the magnitude then it will simply be MULTIPLIED because the DIRECTION is neglected.

फेन (झाग) प्लवन विधि (FROTH FLOTATION PROCESS) में केवल सल्फाइड अयस्कों का सांद्रण इसलिये किया जाता है क्योंकि कि आधात्री के कण आसानी से पानी में भीग जाते हैं, जबकि शुद्ध धातु और अयस्क के कण तेल में ही भीगते हैं।

इस विधि में पानी और तेल के मिश्रण में सल्फाइड अयस्कों को डाला जाता है, जिसमें पानी में भीगने की अपनी प्रकृति के कारण आधात्री या अशुद्धियों के कण पानी में भीगकर भारी हो जाते हैं और पानी में बैठ जाते हैं, जबकि अयस्क के कण तेल में भीगते हैं। कार्बन डाइ ऑक्साइड प्रवाहित करने इसमें फेन (झाग) बनते हैं, जिससे अयस्क के कण सतह पर तैरने लगते हैं, जिन्हे अलग कर लिया जाता है।

Answer:

400 ml

Explanation:

after BALANCING the reaction we FIND that 5 moles of oxygen after reacting with 2 moles of ACETYLENE produces 4 moles of carbon DI oxide.so 200 ml acetylene will REQUIRE 100 ml of oxygen.

2 moles of acetylene produces 4 moles of carbon di oxide, so 200 ml will produce 400 ml of carbon di oxide.

ANSWER:

a)Aluminum

b)coz it forms a LAYER of basic OXIDE over it to protect itself

ANSWER:

To separate the components of a mixture using the following techniques: Separating FUNNEL. Chromatography. Centrifugation. SIMPLE distillation. FRACTIONAL distillation.

Answer:

NH4 - amoniya

Co3 - CORBON trioxide

CL2 - CHLORINE.

ANSWER:

pata nahi

Explanation:

because your language are not UNDERSTANDING me

ANSWER:

EXPLANATION:

REFER the UPLOADED PHOTO

(B) it's Na2HPO3

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ANSWER:

F is LESS negative ELECTRON gain ENTHALPY

Answer:

Atoms consist of three basic PARTICLES: protons, electrons, and neutrons. The NUCLEUS (center) of the atom contains the protons (POSITIVELY charged) and the neutrons (no charge).

EXPLANATION:

An amphoteric compound is ONE that can REACT with both acids and bases. ... The word amphoteric COMES from Greek, where Ampho MEANS both or both kinds - i.e. amphoteric compounds can react with both acids and bases.

Answer:

3.molarity GRAM PER LITRES

ANSWER:

CHEMICAL change is the change in which a new SUBSTANCE is FORMED after some reaction.

for eg. burning of paper

in this a new substance ash is formed which is totally DIFFERENT from paper..

Answer:

It is useful for extremely accurate CALCULATIONS including the alveolar space and… oh, that Bohr equation. The Bohr model, then, is a SYSTEM of equations describing how atoms might behave if they consisted of point particle ELECTRONS orbiting at fixed distances far away from a nucleus (they don't).

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EXPLANATION:

Answer:

Here is ur answer..

Explanation:

Rust is an iron oxide, a usually red oxide formed by the REDOX REACTION of iron and OXYGEN in the presence of water or air moisture. ... Given SUFFICIENT time, oxygen, and water, any iron mass will eventually CONVERT entirely to rust and disintegrate

ANSWER:

Explanation

Normally, when the atoms are separated by a huge amount (infinity) we take this energy to be zero. Bringing the atoms closer to one another has an attractive POTENTIAL and the BOND has formed on reaching the lowest POINT on your curve. Moving the atoms closer together increases the potential energy because here we push electrons closer to one another and this energy increases rapidly with each small decrease in separation due to repulsion of similar charges. The slope of the curve GIVES the force on the atoms, so at small separation they experience a large force and repel one another. At large separation, where the slope is positive, there is a smaller attractive force.

Poor diagram

Hope you understand!!!

ANSWER:

OXIDISING agents is a substance that TENDS to BRING about oxidation by being REDUCED and gaining electrons.