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Answer:

The ACTUAL formula for CALCULATING the GRAM Molecular Mass of a substance is : Gram Formula Mass = mass of the SOLUTE/formula mass of the solute. It is always expressed in the unit grams/mole (g/mol).

The basic character of amines is DUE to LONE pair of electrons on nitrogen atom.

This lone pair of electrons can be EASILY donated.

Hence, amines are Lewis BASES.

Amines ACCEPTS a proton from acid.

Answer:

दूध के इन प्रकारों में भिन्न-भिन्न मात्रा में वसा होती है। एक परखनली में थोड़ी मात्रा में संपूर्ण क्रीम युक्त दूध लें। अपकेंद्रीय यंत्र (CENTRIFUGING machine) से इसे दो मिनट तक अपकेंद्रित करें। अगर स्कूल में यह यंत्र उपलब्ध नहीं है, तो यह प्रयोग आप घर पर रसोईं में प्रयोग होने वाली मथनी या मिक्सी से भी कर सकते हैं।

Explanation:

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ANSWER:

ক ) HCN

Explanation:

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Answer:

Hello mate

Explanation:

The dalton or unified atomic mass UNIT is a unit of mass widely used in physics and chemistry. It is DEFINED as 1/12 of the mass of an UNBOUND neutral atom of carbon-12 in its nuclear and electronic ground state and at rest. The atomic mass CONSTANT, denoted mᵤ is defined identically, giving mᵤ = m/12 = 1 Da.

Answer:

In chemistry and related fields, the MOLAR volume, symbol Vₘ, or {\displaystyle {\TILDE {V}}} of a SUBSTANCE is the OCCUPIED volume divided by the amount of substance at a given temperature and PRESSURE.

Explanation:

combustion is a chemical reaction in which an oxidant REACTS RAPIDLY with a fuel to liberate stored energy as thermal energy, most often in the form of high-temperature gases. ... Conventional HYDROCARBON FUELS contain primarily hydrogen and carbon, in ELEMENTAL form or in various compounds.

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Answer:

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Explanation:

BARIUM sulphate reagent CONTAINS barium chloride, sulphate – free alcohol and small quantity of potassium sulphate. The inclusion of the small quantity of potassium sulphate in the reagent increases the SENSITIVITY of the test. Alcohol PREVENTS super saturation and more uniform turbidity develops.

Answer:

⭐❤⤵️ কঠিন পদার্থের গলনাঙ্ক ও স্ফুটনাঙ্ক বলতে কী বুঝায়? - Quora. যে তাপমাত্রায় কোন কঠিন পদার্থ গলতে আরম্ভ হরে, সে তাপমাত্রাকে পদার্থটির গলনাঙ্ক বলা হয়। আর যে তাপমাত্রায় পদার্থ গলে এবং তরল ফুটতে আরম্ভ করে, তাকে পদার্থটির স্ফুটনাঙ্ক বলে।

Explanation:

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Answer:

Hydrogen resembles alkali metals in the combination with halogens ,oxygen and sulphur. On the other hand, hydrogen resembles halogens in that it exists as a diatomic molecule and it COMBINES with metals and non-metals to FORM covalent compounds.

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EXPLANATION:

ANSWER:

it will give 2 MOLECULES of formaldehyde (HCHO)

ANSWER:

molecules MASS of ALCL3 is (27*1)+(35.5*3)=133.5 amu

ALCL3 mass of aluminum =27mass of CHLORINE =106.5 so in 150 amu

ALCL3 mass of aluminum =30.33 mass

ANSWER:

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Explanation:

kehnu banti krda piya ho

Answer:

K AS IT IS MORE REACTIVE AND REACTS VIOLENTLY AND CAUSES THE MIXTURE TO SPLASH

EXPLANATION:

Answer:

There is sample explaination for separation of halides from sample SOLUTION and that is "PRECIPITATION". ... After that precipitated material is removed from solution HENCE the HALOGENS are separated from solution.

Explanation:

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ANSWER:

Very MUCH type of SANDESH

Can never be COUNTABLE

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ANSWER:

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EXPLANATION:

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Kya LOGIC lagaya hai TUMNE, man GAYI

ANSWER:

nsjsbsisbskdbdjdbsodbskdbeoebdodndoe

Explanation:

sjhssiebeiejeieeoehekebeosbdiebeobeodjeoebeoebeieborhejsbdidbdjd dosnksbskejbeoshdobridnkenridhidhdjdjjdjdjjdjdjjspgddbpidhishdjdbphshhdjdjdidijrr

ANSWER:

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ANSWER:

यदि कोई एक धातु पारद है तो इसके मिश्रधातु को अमलगम कहते है।

ANSWER:

Chemical formula of washing SODA is Na 2 CO 3 . When baking soda is heated, sodium CARBONATE, water and are produced. Sodium carbonate OBTAINED is dissoved in water and crystals of washing soda are obtained by crystallization.

Answer:

ALKALI METALS

The metals with increase in period NUMBER are as FOLLOWS:-

Lithium

Sodium

Potassium

Rubidium

Caesium

Francscium

Answer:

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Explanation:

All s orbitals are spherical in SHAPE and have a spherical symmetry. This means that the WAVE FUNCTION will depend on the distance from the NUCLEUS and not on the direction.In any atom,the size of the s orbital increases as the PRINCIPAL quantum number of the orbital increases but its geometrical shape remains same

• The electron is a SUBATOMIC particle, symbol e⁻ or β⁻ , whose electric charge is NEGATIVE one elementary charge. Electrons belong to the FIRST generation of the lepton particle FAMILY, and are generally thought to be elementary particles because they have no known components or substructure.

ANSWER:

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Answer:

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Answer:

the universal INDICATOR will produce red COLOUR and its PH will be 3

Explanation:

as both of them are ACIDS

I) P+5HNO3→H3PO4+5NO2 + H2O

ii) P4+ 3NaOH+3H2O→3NaH2PO2+PH3
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ANSWER:

which TYPE of above EXPERIMENT

• A STABLE SUBATOMIC PARTICLE occurring in all atomic nuclei, with a POSITIVE electric charge equal in magnitude to that of an electron

• CATALYSIS is the process of increasing the rate of a chemical reaction by adding a SUBSTANCE known as a catalyst. Catalysts are not CONSUMED in the catalyzed reaction but can ACT repeatedly. Often only very small amounts of catalyst are REQUIRED.

• Acid, any substance that in water SOLUTION tastes sour, changes the COLOUR of certain indicators (e.g., reddens BLUE litmus paper), reacts with some metals (e.g., iron) to liberate hydrogen, reacts with BASES to form salts, and promotes certain CHEMICAL reactions (acid catalysis)

Explanation:

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2 KHCO → K2CO3 + CO2 + H2O

2potassium bicarbonate—>POTASSIUM CARBONATE + water + carbon dioxide

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ANSWER:

MOLES of S8 = 16/256=1/16 mol

Number of MOLECULES =Na/16= 6.023×10^23 / 16 =3.76×10^22

ANSWER:

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Explanation:

Answer:

If you have ever been in a room when a piping hot pizza was delivered, you have been made aware of the fact that gaseous molecules can quickly spread throughout a room, as EVIDENCED by the pleasant aroma that soon reaches your nose. Although gaseous molecules travel at tremendous speeds (hundreds of meters per second), they collide with other gaseous molecules and travel in many different directions before reaching the desired TARGET. At room temperature, a gaseous molecule will experience billions of collisions per second. The mean free path is the AVERAGE distance a molecule travels between collisions. The mean free path increases with decreasing pressure; in general, the mean free path for a gaseous molecule will be hundreds of TIMES the diameter of the molecule

amount of gas passing through some area per unit time:

RATE of diffusion=unit of timeamount of gas passing through an area.

Answer:

A METAL (from Greek μέταλλον métallon, "mine, quarry, metal") is a material that, when FRESHLY PREPARED, polished, or fractured, shows a LUSTROUS APPEARANCE, and conducts electricity and heat relatively well. Metals are typically malleable (they can be hammered into thin sheets) or ductile (can be drawn into wires).

equation Na2SO4+MgCl2 =NaCl+Mg(SO4)2 is an IMPOSSIBLE REACTION ... + NaCl · Na2SO4 + MgCl2 = MgSO4 + Na2Cl2.

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• The REACTIVITY series is a series of metals, in order of reactivity from HIGHEST to lowest. It is used to determine the PRODUCTS of single displacement reactions, whereby metal A will replace another metal B in a SOLUTION if A is higher in the series.

• Ionic bond, also called electrovalent bond, type of linkage formed from the electrostatic ATTRACTION between oppositely charged ions in a chemical compound. Such a bond FORMS when the VALENCE (outermost) ELECTRONS of one atom are transferred permanently to another atom.

Answer:

After electrolysis:

∵20.09g of anodic solution contained 0.06227 g of AgNO

3

∴ Mass of water in solution =20.09−0.06227=20.02773g

Thus, 20.02773gH

2

O has 0.06277 g AgNO

3

=

170

0.06227

equivalentAgNO

3

=0.0003663equivalentAgNO

3

or Ag

+

Before Electrolysis:

∵10.0g of solution contained 0.01788 g AgNO

3

∴ Mass of water in solution =10−0.01788=9.98212g

Thus, 9.98212 g water has =0.01788 gAgNO

3

=

170

0.01788

eq. AgNO

3

∴20.02773g water has =

170×9.98212

0.01788×20.02773

eq. AgNO

3

=0.000211 equivalent of AgNO

3

or Ag

+

Thus, increase in concentration of Ag

+

during electrolysis

=0.0003663−0.000211

=0.0001553 equivalent

Also, Mass of Cu deposited in coulometer =0.009479 g

∴ Equivalent of Cu deposited in coulometer =

31.8

0.009479

∴ Equivalent of Cu deposited or actual increase around anodic solution

=0.0002981 eq.

(Since, equal equivalents are discharged at either ELECTRODE)

Since, Ag

+

had MIGRATED from anode, which BRINGS a fall in concentration around anode but DUE to attacked electrodes, (i.e., Ag in AgNO

3

), apparent increase is noticed.

Thus, fall in concentration of Ag

+

around anode

= Actual increase which would have occur around anode - Apparent increase in Ag

+

around anode

=0.0002981−0.0001553

=0.0001428 equivalent of Ag

+

∴ Transport no. of t

Ag

+

=

Eq. OFCU

+

deposited in coulometer

Eq. ofAg

+

lost in anodic cell

=

0.0002981

0.0001428

t

Ag

+

=0.479≈5

Now, t

Ag

+

+l

NO

3

−

=1

∴t

NO

3

−

=1−0.4792=0.521≈5

Answer

Buckminsterfullerene is one type of FULLERENE. Its molecules are spherical and CONTAIN 60 carbon atoms. Fullerenes may be used for drug delivery SYSTEMS in the body, in lubricants and as catalysts. The tube fullerenes are CALLED nanotubes.

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Answer:

It states that “A chemical compound is always found to be made up of the same elements COMBINED together in the same fixed proportion by mass”. For EXAMPLE, a sample of pure water from various sources or any country is always made up of only hydrogen and OXYGEN.

EXPLANATION:

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Answer:

According to the Arrhenius definition of acids, an acid GIVES off what in SOLUTION?

According to the Bronsted-Lowry, what is the definition of an acid? What is the definition of a base?

(02) For EVERY given acid or base, WRITE the equation of their reactions with water when they donate or accept one hydrogen ion.

Hydrocyanic acid

Carbonate ion

Ammonium ion

Sulfuric acid

Acetic acid