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d EXPLANATION:it is the RIGHT ANSWER

The molar mass is the mass of a given chemical element or chemical compound (g) divided by the AMOUNT of SUBSTANCE (mol). The molar mass of a compound can be calculated by adding the standard atomic MASSES (in g/mol) of the constituent ATOMS.

Column 1Column 3i. Triada. Lightest and negatively charged particle in all the 1. Mendeleevii. Octaveatoms2. Thomsoniii.ATOMIC number b. Concentrated mass and POSITIVE charge3. Newlandsiv. PERIODC. Average of the first and the third atomic mass4. RUTHERFORDV. Nucleusd. Properties of the eighth element similar to the first 5. Dobereinervi. Electrone. Positive charge on the nucleus6. Moseleyf. SEQUENTIAL change in molecularColumn 1Column 3i. Triada. Lightest and negatively charged particle in all the 1. Mendeleevii. Octaveatoms2. Thomsoniii.Atomic number b. Concentrated mass and positive charge3. Newlandsiv. Periodc. Average of the first and the third atomic mass4. Rutherfordv. Nucleusd. Properties of the eighth element similar to the first 5. Dobereinervi. Electrone. Positive charge on the nucleus6. Moseleyf. Sequential change in molecular.

Explanation:Answer : (i) Sodium and Potassium are the first group ELEMENTS. (II) CHLORINE and Bromine are the 17 group elements. (iii) Argon and XENON are the 18 group elements.

on OCCURS when a reactant LOSES electrons during the REACTION. Reduction occurs when a reactant gains electrons during the reaction. This often occurs when metals are REACTED with acid.

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Electrolytic decomposition MAY result when electric current is passed through an AQUEOUS solution of a COMPOUND. A good example is the ELECTROLYSIS of water. ... Decomposition of sodium chloride:On passing electricity through molten sodium chloride, it DECOMPOSES into sodium and chlorine....@doll54 ❤

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Silk production goes on today in much the same way it did centuries ago. But there is a dark side. This process does pose an ETHICAL dilemma to the growing number of people concerned with the humane treatment of animals, especially those exploited for monetary reasons.  Even if those animals happen to be insects.But the life cycle of the majority of moths whose cocoons are used for pure silk production will be violently interrupted! Their cocoons must remain intact and the moth cannot be allowed out!   The cocoons must be 'harvested' by the family while the silkworms are still in the pupa stage. In order to prevent the pupa from becoming a moth, the cocoons must be BOILED, steamed or BAKED in a process called 'stifling'. After stifling, the end of the silk thread is located and the cocoon is unwound mechanically or by hand. In order to produce fine pure silk, we as HUMANS have domesticated the Bombyx mori moth into one that is blind and cannot fly. She lays eggs once and then dies. We kill her offspring before they mature. And this has been GOING on for over 5000 years.Explanation:

Calcium phosphate. Calcium phosphate is a chemical COMPOUND. Its chemical FORMULA is Ca3(PO4)2, ALTHOUGH there are othe rformulas, like Ca2HPO4 (dicalciumphosphate) and Ca(H2PO4)2 (monocalciumphosphate). It is made of calcium and phosphate ions.Explanation:

- The process of purifying impure metal to obtain PURE metal on the passage of electric current is called electrolytic refining.Metals like copper, zinc, nickel, silver, tin, gold etc., are refined electrolytically.Anode – impure or crude metalCathode – a thin strip of pure metalElectrolyte – aqueous SOLUTION of a metal saltFrom anode (oxidation) – metal IONS are released into the solutionAt cathode (REDUCTION) – equivalent amount of metal from solution is depositedImpurities deposit at the bottom of the anode.

- Metals lose valence electron(s) and FORM cations.Non-metals gain those electrons in their valence shell and form anions.The cation and the anion are attracted to each other by strong ELECTROSTATIC force, thus forming an ionic bond.For example: In CALCIUM chloride, the ionic bond is FORMED by oppositely charged calcium and chloride ions.Calcium atom loses 2 electrons and attains the ELECTRONIC configuration of the nearest noble gas (Ar). By doing so, it gains a net charge of +2.

2.8/14=0.23.2/16=0.20.5/2=1partial PRESSURE =0.2+0.2+1=1.4/4.5= u GET URS answer PERFECTLY

A) Molecular SolidExplanation:COVALENT solids are soft, have a low MELTING point (DUE to relatively weak bonds), and are a poor conductor of electricity (due to absence of free IONS).

tion:distilled water has pH 7 ,that means it is neutral ,if you want to increase the pH greater than 7 then add some ALKALINE substance to it and wants to decrease the PH Less then 7 add some acidic substance into water like lemon juice I hope this ANSWER help you follow me plz mark me BRAIN LIST don't forget to THANKS

hyyyuyExplanation:DEAR folow me..

oncentration is a measure of the concentration of a chemical SPECIES, in particular of a solute in a SOLUTION, in terms of amount of SUBSTANCE per unit VOLUME of solution.Is it molarity or MORALITY.........??

Mole fraction is a unit of CONCENTRATION, defined to be EQUAL to the number of moles of a COMPONENT divided by the total number ofmoles of a solution. Because it is a ratio, mole fraction is a unitless expression. The mole fraction of all components of a solution, when added TOGETHER, will equal 1.

Sodium and potassium are very reactive METALS and and combine explosively with AIR as WELL as water. Hence, they catch fire if kept in open. Therefore, to prevent accidental fires and accidents, sodium is stored immersed in kerosene OIL.

(i) 8 ELECTRONS (ii) 16 electrons (III) 2 electrons Explanation:Refer ATTACHMENT for explanation!!!

Add NaOH to water. The RESULTING solution will GET WARM due to the exothermic PROCESS that OCCURS (heat is expelled).

The 2 PARAMETERS are -TEMPERATURE - Pressure HOPE it HELPS!

The lanthanides and actinides form a group that appears almost disconnected from the rest of the periodic table. This is the f BLOCK of elements, known as the inner transition series. This is due to the proper numerical position between Groups 2 and 3 of the transition metals.Hydrogen doesn't have a fixed position in the periodic table. ... Hydrogen atom has the e- configuration 1s1 and is the first ELEMENT to be placed as PER the rule. It is placed with alkali metals because it can loose its one e- to form H+ just LIKE the alkali metals. but hydrogen also resembles HALOGENS.

A option is the correct answer. Explanation:In GENERAL, ionization potential (both 1st and 2nd) increases from left to right across the period due to increase in EFFECTIVE nuclear charge. On this basis. the second IP values should exhibit the trend: Mn > CR > V > Ti But the actual observed order is: Cr > Mn > V > Ti Practically, only chromium is exceptional and rest others show the NORMAL trend. This exceptional behaviour of chromium is due to the stable configuration (3d5) that it achieves after the loss of first electron.

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BaCl2 is needed to make 250mL of a solution on having same concentration of Cl- IONS as the one contaimimg 2.92gm of NACL per 100ML is solutionBaCl2 is needed to make 250mL of a solution on having same concentration of Cl- ions as the one contaimimg 2.92gm of Nacl per 100mL is solutionBaCl2 is needed to make 250mL of a solution on having same concentration of Cl- ions as the one contaimimg 2.92gm of Nacl per 100mL is solution.

hy dude UR answer isExplanation:First order ELIMINATION KINETICS: a constant proportion (eg. a percentage) of drug is eliminated per unit time. ... First order kinetics is a concentration-dependent process (i.e. the higher the concentration, the faster the clearance), whereas zero order elimination rate is independent of concentrationhope it helps!!PLZ mark me as brainliest answer

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a FIXED VOLUME a fixed SHAPE a fixed SIZE

Metallic oxides react with acids to form SALT and water. This is quite SIMILAR to the reactions of a base with acid to form salt and water. Metallic oxides like quicklime(CaO), copper (II)OXIDE(CUO), MAGNESIUM oxide (MgO),etc., react with acids to form salt and water.

l is a nontoxic, sweet TASTING, and viscous fluid that has the chemical FORMULA C3H8O3. It is a polyol, a COMPOUND that is made up of more than one hydroxyl group. Its chemical structure consists of three hydroxyl groups, which are -OH groups ATTACHED to the carbon atoms.Hope It Will Help.❤

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tion:The shape of the molecule in which central atom is sp³- HYBRIDIZED is tetrahedral. If a carbon atom with 4 SIGMA BONDS then it is said to be sp3 hybridised. If a carbon atom with 3 sigma bonds and ONE pi BOND then it is said to be sp2 hybridised.

2FeBr3 + 3H2SO4 → FE2(SO4)3 + 6HBr

this reaction of ACID with base ANTIQUE news salt and WATER is called NEUTRALIZATION