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MASS of the CONTAINER = 916.4 G.

Mass of the Container with gas = 917.64 g.

Mass of the gas = 917.64 - 916.4

= 1.24 g.

Volume of the container = 1107 cm³

∵ DENSITY = Mass/Volume.

∴ Density = 1.24/1107

⇒ Density = 0.001 gcm⁻³.

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a LAW STATING that equal volumes of gases at the same temperature and PRESSURE contain equal NUMBERS of molecules.


it is equal to 6.022×1023 mol-1

ANSWER:

All onion,CLOVE oil and VANILLA extract are examples. An OLFACTORY indicator WORKS on the principle that when an acid or base is added to it,then different odour can be detected in bases whereas odour remains same in acids. Certain substances changes odour in acidic or basic medium

Explanation:

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it is not COMPLETE REACTION

Answer:

200g is the ANWER

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MASS of HCL is = 4.6 g

Volume of water = 250 ml

Molarity is DEFINED as number of moles present per l of solution.

No. of moles of HCl =

No. of moles of HCl = 0.12 mol

Now, we can use formula of molarity :-

★

Molarity =

Molarity =

Molarity =

hence, the molarity of 250 ml of HCl is 0.48M.

Answer:

Raw materials used in NYLON are petroleum,natural GAS,LIME stone, coal,water,acetylene etc. polyster is MADE using purified terephthalic acid and monoethelyne glycol etc.

Explanation:

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Answer:

Units are categorised in TWO types in PHYSICS .

1) SI

2) CGS units

Derived units are derived with HELP of this Units

----'''"Amannn""---

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ANSWER:

atomicity is the combining capacity with other ELEMENTS to FORM COMPOUNDS and it varies too..

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Answer:

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Explanation:

1.Magnesium ribbon has a coating of BASIC magnesium carbonate on its surface, which is formed by slow action of moist air on it. CLEANING with sand paper helps to REMOVE this layer because of which burning SPEEDS up.

It will burn with dazzling WHITE flame.

2.Zinc sulphate and hydrogen gas

3.hydrogen gas will burn with a pop sound.

ANSWER:

MAGNESIUM GOT OXIDE so it is CLEAN

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Answer:

The melting point of the distilled water is 0°C or 273K. On the basis of colligative properties the melting point will decrease on ADDING 5% of aqueous NaCl.

Explanation:

The melting point decreases because of the decreased intermolecular ATTRACTION between water molecules DUE to PRESENCE of NaCl ions.

Answer:

Explanation:

1.CuO + H2. --> CU + H2O

2.H2S + Cl2 --> S + 2HCl

3.ZnO + C --> ZN + CO

4.MnO2 + 4HCl-->MnCl2 + Cl2 +2H2O

5.2Cu +O2 -->2CuO

6.SO2 + 2H2S -->2H2O +3S

7.H2S + I2 --> 2HI + S

8. 2PbO + C -->2PB + CO2

9.4Fe + 3O2 +2xH2O -->2Fe2O3.xH2O

10.CuO + 2HCl --> CUCL2 + H2O

ANSWER:

SOLUTION doesn't show TYNDAL EFFECT Sol show

ANSWER:

the answer is SUBLIMATION OCCURS

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Answer:

1 a.m.u

i.e..., ATOMIC MASS UNIT

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answer ____CALCIUM oxide (CaO), COMMONLY known as quicklime or burnt lime, is a widely used chemical compound.

ANSWER:

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ANSWER:

Hydrophilic

Explanation:

ANSWER:

Nitration and sulfonation of benzene are TWO EXAMPLES of electrophilic aromatic substitution. The nitronium ion (NO2+) and SULFUR TRIOXIDE (SO3) are the electrophiles and individually react with benzene to give nitrobenzene and benzenesulfonic acid respectively

EXPLANATION:

ANSWER: Iron articles are painted to prevent them from rusting. After painting iron surface does not COME in contact with MOISTURE and air which cause rusting.

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ANSWER:

MAGNESIUM CHLORIDE has ELECTROVALENT LINKAGE

Answer:

ISOTOPES

Explanation:

Carbon in all have 3 isotopes:

• C-12
• C-13
• C-14

All these appearas to be same but aren't. Different isotopes FORM different MATERIALS like:

• Diamond
• Coal
• Buckminster Fullereane
• etc....

Hence, C-14 and N-14 are different.

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Explanation:

1. In COMBINATION REACTION two or more substance are combined

2. catalyst

3.

4. alkali metal

5. POTASSIUM

Answer:

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A solution TURN RED litmus BLUE is a basic solution.

Answer:

A covalent BOND, also called a molecular bond, is a chemical bond that involves the sharing of electron pairs between ATOMS. These electron pairs are known as shared pairs or bonding pairs, and the STABLE balance of ATTRACTIVE and repulsive forces between atoms, when they share ELECTRONS, is known as covalent bonding........

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ANSWER:

SUBLIMATION of AMMONIUM CHLORIDE.

Answer:

In hot dry days the temperature of our body is high and as a mechanism of cooling our bodies, we sweat and SINCE the atmosphere AROUND our body is dry LESS amount of vapour evaporate and thus lowering our body temperature

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ANSWER:

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Explanation:

BURNING of PAPER is a IRREVERSIBLE PHYSICAL change

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Explanation:

ARYL chlorides have no reaction with cold water. And now the reaction with hydroxide IONS: Acyl chlorides generally react rapidly (even violently) with hydroxide ions from, SAY, sodium hydroxide solution. Again, if the -COCL group is attached to a benzene ring, the REACTIONS are slower.

ANSWER:

no. of PROTON is EQUAL to ELECTRON

1. 4FE + 3O2----> FE2O3 (orange-red-brown)
2. 4CU + O2 -----> 2CU2O (red)
3. 2CU + O2 ------> 2CUO (BLACK)
4. 2AG + H2S-----> AG2S + H2 (black)

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ANSWER:

The electronic configuration of fluorine is 1s2 2s2 2px2 2py2 2pz1 Fluorine is one electron DEFICIENT to attain noble gas configuration. If it gains one electron it attains stability & it is more electronegative element.by gaining 1 electron it is showing -1 oxidation state. In fluorine due to the absence of d-orbital it can’t excite electrons. Hence it can’t show +1, +3 oxidation state. In other elements like CHLORINE; bromine vacant d-orbitals are available so that they can excite the electron and SHOWS higher oxidation STATES.

ANSWER:

Both is OXYGEN.

Explanation:

but oxygen CANT be in SINGLE form. Thats we we write it O2

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Answer:

SINCE Latin NAME of IRON is FERRUM , so it's symbol is Fe. Latin name of sodium is natrium , so it's symbol is NA. Latin name of potassium is kalium , so it's symbol is K.

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ANSWER:

Fe2O3 + 3CO-------> 2Fe + 3CO2 is EXAMPLE of oxidation

Answer:

Explanation:

The famous motto is of the unsullied that "fire and ice" sworn to the house of Targerian by the Westeros, they have their oath sworn to Denaers Targerean who is the mother of dragons and follows the motto of "fire and blood".

The squalidness of the houses can be devastating and leading to the great houses to be perished.

Hence there motto is simple yet MEANINGFUL the unbent, unbroken, sworn members of the house of STARK of Westeros has there order BUILT in respect to the other houses which gave them the STRONGHOLD but as the house of Targerian came into force they were bound to abide by there motto.

yes because the single COMPOUND BREAKS down after REACTION into 2 different ATOMS . This reaction takes place with the help of light

ANSWER:

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If THEW process is applied on the solution is greater than its osmotic pressure then the DIRECTION of osmosis is reversed i.e. the solvent starts passing solution to solvent the phenomena is called reverse osmosis

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