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Steam CAUSES more burn than boiling water as steam CONTAINS more amount of HEAT which it absorbed during conversion of it's state from liquid to gas

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Thermolytic DECOMPOSITION Reaction

eg:
2PB(NO3)2 GIVES 2Pbo + 4NO2 + O2
Photolytic Decomposition Reaction
eg:
2Ag + Br2 gives 2AgBr

A GRADUAL increase in the overall TEMPERATURE of EARTH's atmosphere attributed the GREEN house effect cause by increasing co2,CFCS and other polutent

They are biodegradable.natural fibres absorb moisture and allow the CIRCULATION of AIR. they are COMFORTABLE to wear in SUMMER.

During EVAPORATION PARTICLES of liquid evaporate from the UPPER surface of the liquid

Take water in a BEAKER and measure the LEVEL of water.Add some SUGAR and mix it for some time with a spoon.After some time measure the level of water again.You will see that there is no change in the level of water.It demonstrates that there should be some space between water molecules otherwise where would the sugar particles GO which tells us that there is inter PARTICULAR space between particles of matter.

5 ML of OXYGEN LEFT.........

Here is your ANSWER HOPE it HELPS

while heating from the MERCURIC OXIDE OXYGEN is produced so oxide gas is produced

mercury is a LEAST reactive metal so while heating the oxygen is getted from the mercuric oxide

while heating the mercury oxide its decomposis.

Answer.12.40 x10³ ,............

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Hi there.

Due to lone pair -lone pair REPULTION the BONDED atoms of H2O GETS distract from there expected position (as we know LP-LP repultion is >BP-BP) thats why H2O has a V-shape

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25°C +273 K = 298 k is the ANSWER

293-273=20 DEGREE CELSIUS

Solubility is the maximum AMOUNT of a substance that will DISSOLVE in a GIVEN amount of solvent at a specific temperature. There are two direct factors that affect solubility: temperature and pressure. Temperature affects the solubility of both SOLIDS and GASES, but pressure only affects the solubility of gases.

The treatment piece of this process is called the water-treatment process. The water treatment process INVOLVES four steps, in this order: coagulation, sedimentation, filtration, and disinfection.
Coagulation:In water treatment, coagulation flocculation involves the addition of polymers that clump the small, destabilized particles together into larger aggregate so that they can be more easily separated from the water. 
Sedimentation: Sedimentation is a physical water treatment process USING gravity to remove suspended solids from water.
Filtration:Filtration is any of various mechanical, physical or biological operations that separate solids from fluids by adding a MEDIUM through which only the fluid can PASS. The fluid that passes through is called the filtrate.
Disinfection: Water disinfection means the removal, deactivation or KILLING of pathogenic microorganisms. ... When microorganisms are not removed from drinking water, drinking water usage will cause people to fall ill. Sterilization is a process related to disinfection.

It is even possible for a solid to diffuse into another solid; e.g., pure GOLD will diffuse into pure lead, two pieces of chalk TIGHTLY wrapped together are found to become homogeneous after some years; although at ROOM TEMPERATURE this DIFFUSION is very slow.
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if it helped u

Hii...
Here is your ANSWER..

=>The GASES neither have fixed shape nor a fix volume because the molecules of the gases are very apart from each other.The intermolecular space between their particle is negligible.

Hope it HELPS UH...✌️✌️✌️

The process by which a LAYER of oxide or hydroxide or carbonate etc are produced over the surface of an interior METAL in presence of AIR n moisture is CALLED corrosion
prevention methods:
i)painting
oiling
greasing
applying lubricants
rubber coating
plastic coating
electro plating of nickle
galvanization
alloying

FRICTION

If we try to hold GLASS with oil in our hand then it tends to slip because of reduction of friction.

Friction is the action of rubbing of ONE material to ANOTHER. This friction helps to hold things tightly so, that it may not slip from grip. As friction increase then our grip BECOMES mre strong and if it is reduced then grip will get loose.

For example:- Our chances of falling from a rough mat is very less than change of falling from marble floor as friction is more in mat than on marble floor. It is because the surface AREA is smooth which reduces the friction.

Similarly, as we know that lubricants reduces friction such as oil. If friction is reduced then the grip becomes smooth and slippy and slips easily from our hand because of oil. That's why if we try to hold the glass with oil in our hand, it tends to slip.

We can SEPARATE them by sublimation METHOD . When we HEAT it the IODINE gets stuck on the SIDES in the liquid form

Answer:

Explanation:

A limited reagent's concept is easy.It is that REACTANT which is not in excess,that is least COMPARED to the other elements in a chemical reaction.Hope you UNDERSTOOD

Heya!!

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1. METALS are generally hard while non metals are nt tht hard (mainly in gaseous state).

2. Metals are malleable while non metals are nt malleable.

3. Metals are ductile while non metals are nt ductile.

4. Metals have HIGH melting nd BOILING point while non metals haven't so.

5. Metals have Lustre while non metals have not.

All having some exceptions!!

HOPE it helps uh :)

HEY Devgupta,

Zinc is more reactive than HYDROGEN and it displaces hydrogen from dilute acids. Zinc REACTS with dilute sulphuric acid to form zinc SULPHATE and hydrogen gas is evolved. This is a single displacement reaction of a non-metal by a metal.

hope dis helps u!

with regards,

NaSO4+BaCl2 will give RISE to NaCl2+BaSO4
double DISPLACEMENT REACTION will take place

It is STANDARD TEMPERATURE and PRESSURE

Hey Macrozzcrazy,

1.The TWO observations on heating ferrous sulphate are

•The COLOUR of the COMPOUND changes to light green to white which on further heating changes to DARK brown.

•A gas is emitted of a characteristic smell of sulphur

2.Thermal Decomposition Reaction

hope dis helps u!

with regards,

2H2 + O2 = 2H2O

Multiply by 5

10 H2 + 5 O2 = 10 H2O

We will GET 10 volume of WATER.

Answer:

Thus for 1 MOLE methane we need 2 mole of oxygen for complete combustion. Hence 0.5 MOLES of oxygen will occupy 22.4 L x 0.5 = 11.2 L. 11.2 L of oxygen is REQUIRED for complete combustion of 0.25 mole methane at STP.

It did not tell us about the structure of an atom
it was proved wrong as atom can be further divided into ELECTRONS PROTONS and neutron
also it did not tell us why atom as a whole is neutral
it didn't tell us about isotopes
it SUCCESSFULLY proved law of conservation of mass but failed to PROVE law of gaseous VOLUMES.

The electron pair that is BONDING HCltogether shifts toward the chlorineatom because it has a LARGER ELECTRONEGATIVITY VALUE. A bond in which the electron pair is SHIFTED toward one atom is called a polar covalent bond. ... A bond in which the electron pair is shifted towards one atom is called a polar covalent bond

ANSWER:

so..............

what I have to explain

xd .....................

can't you POST MEANINGFULL QUESTION

The STATE where the WATER is GOING to REACH the gaseous phase (it MIGHT be State between the liquid state and gaseous state). that is the temperature where the water is about to go to the gaseous state

The SOLID FORM of CARBON dioxide is called DRY ice because it cannot remain in form of LIQUID this the reason ice is formed with no liquid molecule.hence it is known to be dry ice.

Here is your ANSWER PLEASE MARK as BRAINLIEST

A)When iron filings and sulphur POWDER are mixed, both RETAIN their properties. It means they have not UNDERGONE any chemical reaction. When this mixture is heated, they UNDERGO chemical reaction and form ferrous SULPHIDE (FeS).
b)FeS Fe + S = FeS

Your ANSWER is 2..
OKK..

Hey mate

We know that sodium carbonate is a BASIC salt. HENCE, its aqueous solution will ALSO be basic in nature. SINCE acids turn blue litmus red while bases turn red litmus blue, therefore when red litmus paper is dipped in sodium carbonate solution it will change to blue COLOUR. Blue limus paper, however will not show any colour change and will exhibit blue colour only. 

Hope you understand

Thanks