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4.9 gExplanation:wt. of solute(w) =?               volume of solution (v)  = 500ml              equivalent  MASS of h2so4  =49  g per equi.               normality (N) =  0.2  NFORMULA ;      N = w/eq wt                                ---------------      *  1000                                   V  (ML)

tion:here is your answer(a) water at room temperature is LIQUID because at this temperature (i)it has fixed VOLUME and (ii)it can flow. B) An iron ALMIRAH is SOLID at room temperature because at this temperature (i) it has definite shape along with fixed volume and (ii) It can not flow like water and hence does not possess fluidity.hope it's helpful for you ☺️

Deaerators are commonly USED to remove dissolved gases in feedwater for steam-generating boilers. Dissolved oxygen in feedwater will CAUSE serious corrosion damage in a boiler by attaching to the walls of metal piping and other equipment and FORMING oxides (like RUST). Please mark it as the BRAINLIEST answer

Limitations of law of definite proportions: The law does not hold TRUE if the different isotopes of the element are involved in making CHEMICAL compound. the law is not applicable when elements combine in the same RATIO but different compounds are formed.Mark as BRANILIST and FOLLOW me

tion:M1 = it is the first molarity of Hcl acid=1 Mv1= it is the first volume of hcl acid = 50 CM cube M2= it is the SECOND molarity of Hcl acid = 0.1 M v2= it is the second volume of hcl acid =? if the volume of hcl SOLUTION will be 500 CM cube u will get 0.1 molarity

An AQUEOUS solution of an ACID conducts electricity because in WATER, an acid (HCl) dissociates to GIVE ions. Since, the current is carried out by the MOVEMENT of ions, an aqueous solution of acid conducts electricity. During dilution, more of acid dissociates into ions.Mar 29, 2019

When a solution CONTAINING CATIONS of sodium and potassium is spayed intoflame, the solvent EVAPORATES and ions are converted into ATOMIC state. In the HEAT of the flame (temperature about 1800ºC), small fraction of the atoms is excited.Explanation:pls mark me as brainliest ❣❣

The SOLUTION having ph equal to 2 will be acidic,because less ph IMPLIES acidic strength is moresince less ph MEANS higher HYDROGEN ion concentration

ature COEFFICIENT refers to the ratio of rate CONSTANTS of a chemical reaction, affected by 10 DEGREE RISE in temperature. ...Temperature coefficient refers to the ratio of rate constants of a chemical reaction, affected by 10 degree rise in temperature. Represented by Kt+10C/Kt.. It's VALUE varies between 2–3.2 Half Life Period of A Reaction.Half life period of a reaction is defined as the time during which the concentration of a reactant is reduced to half of its initial concentration. Now, half life period corresponds to time during which the initial concentration, [A]0 is reduced tohalf

It is because bees sting CONTAINS an acid which causes pain and irritation. Alcaline or a SLIGHT BASE could be APPLIED to neutralize the acid.

tion:we know carbon have atomic no :- 6 so, electronic configuration of carbon is K. L 2. 4 to DETERMINE group of elements, we should add VALENCE electron with 10 if it is greater than 2 electron in its valence SHELL c have 4 electron in its valence shell therefore c group no is =4+10=14 don't add 10 if it's valence electron are 1 or 2 no of shell determine the no of period c have 2 shell so it belongs to SECOND period

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Neutralisation in HealthAntacids contains bases such as aluminium HYDROXIDE, AL(OH)3 and magnesium hydroxide, Mg(OH)2 to neutralise the excess acid in the stomach. Vinegar is used to CURE wasp stings that are alkaline in NATURE. Baking powder is used to cure bee stings and ant bites that are ACIDIC in nature.MARK ME AS BRAINLIST ✌

when we THROW PLASTIC bags and loiter around some stray animals LIKE cows or dogs eat and CHOKE on it causing their lives.So KEEP clean and save lives✌✌

It releases an ACID called melittin in it's STINGER to it's enemy. BAKING Soda neutrilizes the bee's venom. PLEASE MARK IT AS THE BRAINLIEST ANSWER.

tion:3.4 MOL is the ANSWER , PLEASE LIKE this answer

Hi mateHere is your AnswerApart by throwing PLASTIC bags in the seawage the sewage become chovk and does dirty water GET accumulated and causing foul smell be part when animals like cows eat the plastic bag THROWN CARELESSLY by understanding them as food the digestive system and their food pipe get CHOCKS and they die.Explanation:Hope it helps you

The atomic number of each element is written above the symbol. A period is a HORIZONTAL ROW of the periodic table. There are seven periods in the periodic table, with each one BEGINNING at the far LEFT. A new period begins when a new principal energy level begins FILLING with electrons.

ting contains acid → Methanoic acid (also known as Formic Acid ). Due to this reason it CAUSES irritation in the skin resulting in SWELLING up of the AFFECTED area.♦ One more substance present in sting is Melittin which contributes in adding up to PAIN and irritation.→ Baking soda or some alkaline base can be used to neutralise the acid and gives RELIEVE in pain.→Here Neutralisation Reaction takes and base cancels the effect of acid.

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Explanation: A CHEMICAL reaction is a Process in which one or more substances , also called reactants, are converted to one or more different substances, know as PRODUCTS. ... A chemical reaction rearranges the CONSTITUENT ATOMS of the reactants to create different substances as products. Chemical reactions are USED to Produce most of our energy. I Hope It is your Helpful

Principal functional groupThe functional group which has the highest priority among all the functional GROUPS PRESENT in an ORGANIC compound is selected as the PRINCIPLE functional group. All functional groups other than the principal functional group present in an organic compound are called substituents.Explanation:hope it's helpful for you and mark as the brainliest ANSWER please

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tion:Hydrochloric acid is PREPARED by dissolving gaseous hydrogen chloride in water. Because of the corrosive NATURE of the acid, CERAMIC, glass, or sometimes tantalum apparatus is commonly used.

The MEDICINE which CONTAINS KILLED or weaked pathogens is KNOW as vaccine.

in the FIRE EXTINGUISHER to fire the fire o2 is WANT to stop the fire COW is want in that that is in

John NEWLANDS. EXPLANATION:John newlands was the PERSON who GIVEN explanation of law of octaves.

stic is useful but not decomposable that is the reason for decrease the USE of PLASTIC..

love chairsExplanation:CHAIRS ISA MATTERA gas CONTAINER FILLED the gas in container

ds. More than ONE MILLION carbon COMPOUNDS have been described in chemical literature, and chemists synthesize MANY new ones each YEAR.

400Explanation:100*4mark BRILLIANT

There are 6 significant figures As there are 6 DIGITS after the DECIMAL POINT

It is necessary so that to know about the same reaction again a LOT of work don't have to be doneit is same as the SUPREME COURT being the BOOK of record

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difference is: 1, boiling can occurs everywhere, depending on the HEAT source. WHEREAS evaporation only takes place at surface of the liquid. 2, boiling REQUIRES certain temperature at certain pressure, and CONTINUOUS heating source, while evaporation WORKS at any temperature and pressure.