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i) Fuel- To give combustion(ii)Air-Most essential for LETTING the FIRE burn(III) Heat- To provide ignition temperatureExplanation:o HOPE it helps you

xed interval of TIME is known as time period of the periodic motion. Examples of periodic motion are motion of HANDS of the CLOCK, motion of PLANETS around the sun etc. Oscillatory motion is defined as the to and fro motion of the body about its fixed POSITION. Oscillatory motion is a type of periodic motion.

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. CL–F3. noble GASES4. a the algebraic sum of all the oxidation numbers in a compound is zero5. c Groups- 7,8,96. occlusion7. 120 degree8. 19. Lyman10. ChromiumI hope it is helpfulby BRO SUNNY

Oxygen =O2 CHLORINE =CL carbon= C

Polar covalent bonding is a type of CHEMICAL bond where a pair of electrons are unequally shared between two atoms. The bonding of hydrogen and chlorine atoms leans more towards Cl ATOM because Cl is more electronegative in nature than the hydrogen.hope this helps you Mark as BRAINLIST

In chemistry, pH {DENOTING 'potential of HYDROGEN' or 'power of hydrogen} is a scale USED to specify the acidity or basicity of an aqueous solution. Lower pH values correspond to solutions which are more acidic in nature, while higher values correspond to solutions which are more BASIC or alkaline.Our blood and other body fluids that surround the CELLS are slightly alkaline (pH from 7.2 to 7.45). Hope this helps uu!!

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because SULPHURIC ACID is DIBASIC acid because it is dibasic acid

The ATOMICITY of OZONE(O3​) is 3, sulphur(S8​) is 8, phosphorus(P4​) is 4 and Argon(NOBLE GAS, Ar) is 1.

s 8 COVALENT BONDS

low IGNITION temperature and can CATCH FIRE EASILY. ... They are SUBSTANCES, which have very low ignition temperature and when exposed to air, they catch fire easily. ★彡

lysis of WATER is the DECOMPOSITION of water into oxygen and hydrogen gas DUE to the passage of an ELECTRIC current.

n is an inert gas which is flushed in FOOD items as it does not react with food items and removes all the oxygen present in food. Oxygen present in food items makes then rancid due to the presence of oils and fats. NITROGEN is CHEMICALLY nonreactive with oils and fats so it PRESERVES the oily food items.Hence, oil and fat CONTAINING food items are flushed with nitrogen.

tion:kerosenecause it has the PROPERTY of catching firethus, we don't BRING it in contact with HOPE it HELPS

this is the ANSWER  MARK me brainlistExplanation:ρ=Z×Ma3×N0  or a3=Z×Mρ×N0=4×0.027kgmol−12700kgm−3×6.02×1023mol−1 =66.4×10−30m3ora=(66.4)1/3×10−10m PUTTING (66.4)1/3=x,logx=13log66.4=1.82223=0.6074∴x=0.4.050∴a=4.05×10−10 m For FCC, r=a22–√=4.05×10−10m2×1.414=1.43×1010 m

Solution A with pH=6 is ACIDIC in NATURE as it is less than 7 while B is basic with pH=8. The hydrogen ION concentration is more for acidic solution A than the solution B which is basic in nature. A is an acid and B is a BASE.

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centration of hydroxide ions will increase when excess base is DISSOLVED in a SOLUTION of sodium hydroxide because the amount of hydroxide ions per unit VOLUME increases. This happens only when base ADDED dissolves in WATER.

Because it is ONE and TWO. Acetic ACID is one and ACIDITY of Calcium is two

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because if we will ADD water into Acid it may sparkle on our FACES cause ingereous WOUND, so it would be BETTER to add acid into water

tion:Dry HCL it does not dissociate to give H+ ions. Acids dissociate to give ions only in the aqueous solution. In this, HCL is not in the aqueous FORM nor the litmus paper is WET, so the colour of the litmus paper does not change.hope it HELPS U dear♥♥♥

se of H+ ion in water will make a compound acidic or non-acidic. Acids are the SUBSTANCE which upon dissociating with water results in production of Hydrogen ions. Some compounds SHOW acidic character as they dissociate in the aqueous solution which results in the production of hydrogen ions (acids like HCl, HNO3).Compounds similar to glucose or alcohol do contain hydrogen element but they do not show signs of acidic nature. The fact that the hydrogen in them will not SEPARATE as like the hydrogen in the acids. They will not separate to become hydrogen ions, on dissolving in the water.Hence, dissociation of hydrogen gas will decide the acidic or non-acidic nature of a compound.

When calcium carbonate reacts with hydrochloric acid, it produces CARBON dioxide gas with effervescence. Carbon dioxide used as fire extinguisher. Hence, it EXTINGUISHES a BURNING candle. THEREFORE, the metal compound A is calcium carbonate.Explanation:follow me

ate bond is formed when the shared pair of electrons is PROVIDED by one of the two atoms and it is shared by both the atoms. The conditions NECESSARY for the formation of coordinate bond are:(1). One of the atoms should have a lone pair of electron to share which is known as donor atom.(2). The other atom MUST have an incomplete outermost SHELL which shares the electron pair is known as the acceptor atom.

At CONSTANT TEMPERATURE P1V1=K or V1=K/P1 If pressure increased THREE times then 3P1V2=K or  V2=K/3P1Thus, V2=1/3V1

they both are acidic and REACTOR EXPLANATION:PLEASE Mark as brainliest and FOLLOW me

canadaExplanation:i HOPE this will be HELPFUL for you

1.Fig.6.2 :Ans: When the BURNING candle is covered with gas jar, then the candle takes away the OXYGEN necessary for burning from the AIR ENCLOSED in the gas jar.

F COMBUSTION:COMPLETE AND INCOMPLETE COMBUSTION:1.COMPLETE COMBUSTION:During complete combustion, the reactant burns in oxygen and produces products that are limited. When a hydrocarbon is burnt in oxygen, the reaction yields carbon dioxide and water primarily. When different elements are burned, the products of those are primarily common chemical oxides. Carbon produces carbon dioxide, sulfur yields sulfur dioxide, and iron returns iron (III) oxide.2.Incomplete Combustion:This combustion takes place when there doesn’t exist enough oxygen, allowing fuel to react COMPLETELY producing carbon dioxide and water. This combustion is the same as complete combustion, it also produces water, but instead of carbon dioxide, the product is carbon and carbon monoxide. In this type of combustion, products which are pyrolysis remains unburnt and contaminate the resulted smoke with noxious gases.3.Smoldering:This form of combustion is slow, flameless and a low-temperature combustion, undergone by the heat evolved when the surface of the fuel is directly ATTACKED by oxygen. Typically, it is an incomplete form of the combustion reaction. Solid materials that undergo smoldering combustion includes materials like coal, cellulose, cotton, tobacco, wood, foams etc.4.Rapid Combustion:Rapid combustion otherwise known as fire is a type of reaction which releases a large amount of heat and light and results in a flame often. This reaction is used in the form of machinery like internal combustion engines and thermobaric weapons. This combustion is intermittently known as explosion combustion.5.Spontaneous combustion:It is a type of combustion that occurs through self-healing, pursued by thermal runaway and then, finally ignition. Example, PHOSPHOROUS ignites on itself at room temperature WITHOUT heat application.6.Turbulent combustion:Combustion that results in a turbulent flame is mostly utilized for industrial applications as the turbulence helps in fuels and oxidizer mixing process.7. Micro-combustion:Micro combustion is combustions whose combustion processes take place in very small volumes. The high ratio of surface-to-volume increases loss of heat.FUELS IN COMBUSTIONSubstances or materials that undergo in combustion are known as fuels of combustion. The most general examples of this fuels are natural gases, kerosene, diesel, charcoal etc.Liquid fuels:Liquid fuels are combustible molecules that can be used to create mechanical energy and they also take the shape of their container. Combustion of liquid fuel happens in the gas phase. It is the fumes instead of fluid of liquid fuel which is flammable that is why a liquid catches fire only above a certain temperature.Gaseous fuels:Combustion of gaseous fuels takes place through any of these four types of burning: diffusion flame, premixed flame, autoignitive reaction or detonation. The types of burning are actually dependent upon the degree to which the fuel and oxidizer are mixed and also on the pressure exerted pre-heating.Solid fuels:Solid fuels are solid materials used as a fuel to produce energy and produce heat. Solid fuels include wood, charcoal, wheat, and corn, pellets made from wood and other grains. Humans have used solid fuel for many years for producing fire.Explanation:HOPE YOU LIKE , THANKS ME BRAINLIEST ME AND FOLLOW ME ❤❤

when an electric CURRENT is passed through WATER Electrolytic decomposition TAKES place. This MEANS that the water splits ...

Molecules have arrangement : 1. In  gas are well separated with no regular arrangement. 2. In LIQUID are close TOGETHER with no regular arrangement. 3. In solid are tightly packed, usually in a regular pattern.

ormality of any acid or base will be EQUAL to gram-equivalent desolve in given volume N = gram-equivalent/ volume(lt.) When two or more compounds or elements react together their gram-equivalent will be equal in simple WAY, 10 gm-eq of an acid will react completely with 10 gm-eq of base, In given problem, gm-eq. of H2SO4 = N*V(lt.) and N = n*M where, M = molarity and n = BASICITY or acidity of an acid or base. gm-eq of H2SO4 = 100*2*0.2*0.001 =0.04gm-eq gm-eq of NaOH = 100*0.2*1*0.001 =0.02 REMAINING gm-eq of H2SO4 = 0.04–0.02 0.02gm-eq Now, gm-eq. = N*V = 0.02 TOTAL volume =200ml = 0.2 lt. N*0.2 = 0.02 = 0.1N

tion:Displacement Reactions- The chemical reaction in which more reactive elements displaces LESS reactive elements from its salt solution. ex- Fe(s) + CuSO4(AQ) = FeSO4 (aq) + Cu (s) Double Displacement Reactions- A reactions in which new compounds are FORMED by mutual exchange of IONS between two compounds. ex- Na2SO4(aq) + BaCl2(aq) = BaSO4(s) + 2NaCl(aq)

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