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As we moving down the GROUP the size increases due to INCREASE in no. Of SHELL of the ELEMENT.

please MARK this as brain list answer.....Explanation:Michael FaradayDiscovery of benzeneBenzene was FIRST discovered by the English SCIENTIST Michael FARADAY in 1825 in illuminating gas. In 1834 GERMAN chemist Eilhardt Mitscherlich heated benzoic acid with lime and produced benzene. In 1845 German chemist A.W. von Hofmann isolated benzene from coal tar.

a) 28gb)108gc)1420.4gd)3.6g

➡️The SIMPLEST positive INTEGER ratio of atoms present in a compound is TERMED as empiral formula. ➡️To calculate the empirical formula, you must first determine the RELATIVE masses of the various ELEMENTS present.Thanks!!

here we have to USE mass by mass PERCENTAGE mass of solvent / mass of SOLUTION × 100150/ 20× 100=750

0.135Explanation:CARBON ATOMICS no.13hydrogen= 1oxygen=16

The CORRECT answer is option B.Explanation:For association: = degree of association i = van't HOFF factori = = CALCULATED molecule mass = Observed molecular massn = 2

The Henry's law CONSTANT for the solubility of N2 GAS in WATER at 298K is 1

2 atoms are presentExplanation:224*12.5/100.= 28gMeans in CAFFEINE 28 G nitrogen is PRESENT. MOLECULAR mass of N2 is 28 means it CONTAINS 2 atoms of nitrogen. Hence in 28g of N2 contains 2 atoms of nitrogen.

Explanation:percentage of oxygen=34.1%therefore mass ratio=34.1/16=2.131percentage of carbn=52.2%therefore mass ratio=52.2/12=4.35percentage of hydrogen= 13%therefore mass ratio=13ratio of mass RATIOS(XD): 2.131 : 4.35: 13=1:2:6=O:C:Htherefore empirical formula will be C2H6Omark as brainliest and have a nice day

1.51 eVExplanation:E = 13.6 × z^2 / n^2Given that E in the first SHELL is 13.6 eV Therefore it is evident that z(atomic NUMBER ) is 1Therefore ,E(3) = 13.6 /9 =1.51 eV

a COLLOID is SOMEWHERE in between a truly HOMOGENEOUS and heterogeneous mixture

e in temperature leads to an increase in the rate of EVAPORATION or, evaporation is directly PROPORTIONAL to temperature.Increase in HUMIDITY leads to a decrease in the rate of evaporation or, evaporation is inversely proportional to humidity (the moisture CONTENT in sorrounding air)

112.3 GRAM is the LEAST MOLAR MASS

How do you find the law of multiple proportion ?..The Law of Multiple Proportions deals with elements that form more than ONE COMPOUND. It STATES that the masses of one element that combine with a fixed mass of the second element are in a small whole number ratio. For example, carbon and OXYGEN react to form two compounds...What do the law of multiple proportion actually MEANS..?when two elements combine in more than one proportion to form two or more compounds the weights of one element that combine with a given weight of the other element are in the ratios of small whole numbers.

The molarity of a solution is the number of moles of SOLUTE per liter of solution. The molar mass of any particle (atom, molecule, FORMULA, or ion) is the sum of the average atomic masses of all atoms forming that particle. This is also known as molecular weight.The molar mass of an atom is its average atomic mass expressed in grams. The atomic mass of all atoms can be found in the periodic table.For DILUTE solutions, one part per million equals one mg/L. In most cases, the two are considered equal.To convert from molarity to ppm, first determine the molar mass of a substance. For instance, chloride has a molar mass of 35.5. A solution with 1 M concentration WOULD have 35.5 g of chloride per 1 L of solution.Molarity(moles/Liter = M) grams/L(g/L) PARTS Per Million(ppm) miligrams/L(mg/L)1 M 35.5 35,500 35,50010-1 M 3.55 3,550 3,55010-2 M 0.355 355.0 355.010-3 M 0.0355 35.5 35.510-4 M 0.00355 3.55 3.55

The formula for molality is m = MOLES of solute / kilograms of solvent. In problem solving involving molality, we sometimes need to use ADDITIONAL formulas to get to the final answer. One formula we need to be AWARE of is the formula for density, which is d = m / v, where d is density, m is mass and v is volume.hope so it helps if yes...plzz mark it brainliest and FOLLOW me tooo plzz

0.000000000000000000000000000000000000/ⁿ‽+2

lens is a transparent curved device that is used to refract light. A lens is USUALLY made from glass. There are  two types of lens i.e. CONVEX and CONCAVE lens .convex lens is thicker in the middle and thinner at the edges.A convex lens is also called a CONVERGING lens.the concave lens is thinner in middle and thicker at edges.Convex lens is also KNOWN as diverging lens.

this is about some IDEA of UR QUESTION

⊕Father of Early Chemistry Father of Chemistry - Jabir IBN Hayyan (GEBER) Father of Modern Chemistry  - ANTOINE LAVOISIER Father of Modern Chemistry  - Robert Boyle Father of Modern Chemistry  - Jöns Berzelius

i am not able to SOLVE the SECOND ONE but other TWO are explained by me i hope it helped U...

all decomposition reactions are ENDOTHERMIC REACTION because in decomposition reaction the TWO compound are in the POWER of POSITIVE and negative.

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Option C Explanation:Given : A 100 ml mixture of CO and CO2, is passed through a tube containing red hot charcoal. The volume  becomes 160 ml. The volumes are measured under the same conditions of temperature and pressure.To find : AMONGST the following, SELECT the INCORRECT statement ?Solution : A 100 ml mixture of CO and Let x ml of CO.So, 100-x of We know that, The final volume would be The AMOUNT is 40 ml of CO 100-40=60ml of  Option C is incorrect.

so electronic SPECIES from the GIVEN H+, F- , O2- , Ne, He+ are F- and Ne.

General CHARACTERISTICS and Properties of SuspensionGeneral Characteristics and Properties of SuspensionParticles of the solute do not dissolve in the solvent rather they remain suspended in bulk throughout. The size of particles of suspension is LARGE enough to be visible from NAKED eyes. They are GREATER than 1 nanometer (?10?^(-9) meter).HOPE IT HELPS YOU BUDDY.

tion: Byzantine fault (ALSO interactive CONSISTENCY, source CONGRUENCY, error AVALANCHE, Byzantine agreement problem, Byzantine generals problem, and Byzantine failure) is a condition of a computer SYSTEM, particularly distributed computing systems, where components may fail and there is imperfect information

tion:The TEMPERATURE at which liquid CHANGES into vapour is called it's boiling POINT

e with chemical equation how ETHANOIC acid may be obtained from ethanol. Ethanol (Ethyl ALCOHOL) undergoes oxidation to form product ACETALDEHYDE and finally FORMS ethanoic acid. Alkaline potassium permanganate acts as oxidizing agent.plz mark as me brainlist

It GIVES 2 MOLES of METHANOL

NoExplanation: The emperical FORMULA of the ETHANOL and DIMETHYL ether is same but he molecular formula is DIFFERENT.