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ANSWER:

❤️❤️Chemistry / Language of Chemistry. A Chemical symbol represent a specific element or an ATOM of an element. A chemical symbol makes it EASIER to write a chemical reaction. ... This is determined based on the number of ELECTRONS that would be added, lost or shared if it REACTS with other atoms.❤️❤️

Explanation:

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ANSWER:

I THINK......The answer MAY be 2

ANSWER:

H2O. I will be ABLE to GET

ANSWER:

A covalent BOND forms between two non-metals by sharing electrons, so an example could be "Water, H2O" as it is FORMED by the share of electrons of hydrogen and OXYGEN (which are both non-metals). And another example of a covalent bond coud "Carbon DIOXIDE, CO2"....

ANSWER:

co2+h2o is the CORRECT answer

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Explanation:

➡️The Haber process, the forwards reaction is EXOTHERMIC , so the REVERSE reaction is ENDOTHERMIC. This means that as the temperature is increased, the position of equilibrium MOVES to the left, and the yield of ammonia decreases.

EXPLANATION:

The RADIUS of THIRD ORBIT will be 2.25R.

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Answer:

EXPLANATION:

At stp 22.4 l of N2O contains 6*10^23 NUMBER of MOLECULES

22.4 l = 22,400 cm^3

22,400 cm^3 N2O contains 6*10^23 molecules

1 cm^3 N2O contains (6*10^23)/22,400 molecules

= 2.69 * 10^19 molecules

Answer:

Explanation:

It is easier to obtain metals from their oxides rather than from carbonates or SULPHIDES. So the ore is first CONVERTED into an OXIDE. ... It is the PROCESS of heating the CONCENTRATED ore in the presence of excess air. Volatile impurities also get expelled.

ANSWER:

TEMPERATURE of gas

Explanation:

because it s from GASEOUS STATE

EXPLANATION:

HELLO...

The alkyl groups of two alkyl HALIDES join together to form an alkane.

The Wurtz reaction is not suitable for tertiary alkyl halides DUE to side reaction involving elimintaion reactionsAs steric-hindrance i.e. the FACTOR which arises due to the bulkiness of to reacting alkyl, or rather, tertiary alkyl groups.

Explanation:

because in carboxylate ion negative CHARGE is delocalised with two OXYGEN ATOM but in phenoxide ion negative charge delocalised over ORTHO, para POSITION

Answer:

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Explanation:

This reaction can be traced back to Debus's transformation of hydrocyanic acid into methylamine over platinum in 1863, De Wilde's hydrogenation of acetylene into ethylene and ethane in 1874, (1) and Mond's extensive work from 1890 to 1895. (2) However, it was in 1899 that Sabatier and Senderens established nickel‐based hydrogenation (3) and converted the unsaturated organic molecules (e.g., ketones, aldehydes, alkenes and aromatics) into corresponding saturated compounds (i.e., alcohols, hydrocarbons) by passing the vapor of organic molecules and hydrogen over hot, FINELY divided nickel.

This nickel‐based vapor phase hydrogenation became one of the most practically useful reactions and won Sabatier the Nobel Prize in 1912. (1) It is generally known as the Sabatier‐Senderens reduction. (4)

This reaction is different from reductions using nascent hydrogen as the reducing agent, such as amalgam of sodium in alcohol (alkaline condition) and or zinc or tin with hydrochloric acid (acidic medium). In this reaction, the purity of nickel and reaction temperature are FOUND to be critical for successful hydrogenation. (1) For example, trace amounts of sulfur, bromine, or iodine will deactivate the nickel catalyst; in addition, it has been found that each hydrogenation process takes place only within a well‐defined temperature range, (1) as evidenced by the hydrogenation of benzene to cyclohexane at temperatures ranging from 70° to 190°C, with an optimal temperature between 170° and 190°C, and the further reduction of benzene to methane accompanied by the DEPOSITED carbon on nickel at temperatures > 300°C. (5) Under the correct hydrogenation conditions, Sabatier et al. successfully converted oleic acid into stearic acid, acetone to isopropanol, carbon monoxide into methane or a gaseous mixture rich in methane, phenol and p‐cresol into cyclohexanol and p‐methylcyclohexanol, benzene to cyclohexane, and naphthalene to tetralin, etc. (1) All these reductions afford the expected products, except for the hydrogenation of naphthalene; other reducing methods may lead to the unexpected products, as demonstrated by the reduction of benzene with hydroiodic acid at 250°C to afford methyl cyclopentane, (1) and the hydrogenation of only one phenyl group of triphenylcarbinol over the Adam's platinum oxide catalyst. (6) At the same time, Sabatier et al. also found that the reduced cobalt, iron, copper, and powdered platinum have catalytic activities similar to nickel. Copper in particular is known to be SUPERIOR to nickel during the hydrogenation of nitrobenzene to aniline, due to its insensitivity to accidental impurities. (1) It is interesting that Sabatier was able to reduce naphthalene into only tetralin, (7, 8) other researchers have successfully converted naphthalene into decalin over nickel.

ANSWER:

due to the INCREASE of EFFECTIVE nuclear CHARGE and small size

Answer:

1m KCL has a HIGHER BOILING POINT.

Answer:

Answer: We KNOW that the weight of the HYDROGEN atom is 1 gram which is its atomic weight and also its atomic number. Again, we know that 1 molecule is MADE up of 6.023*10^23 ATOMS. HENCE, 1 atom will have 1 gram of the hydrogen.

From the PICTURE I have GIVEN to you we came to know that (d) SO2 and SO3 will follow the LAW of multiple proportion.

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The periodic table has impacted greatly on the human WELFARE in various ways, for example it has helped scientist discover what elements are needed for human survival.

The periodic table outlines clearly all the chemical elements that have been proven to be USEFUL to mankind.

•>Oxygen for example as an element on the periodic table is used by mankind in various spheres of LIFE including HOSPITALS on patients who have breathing problems.

•>NITROGEN element has impacted greatly in the chemical industry. It is used in the manufacture of fertilizers, dyes and explosives.

•>Sodium element is useful in the human body. It helps body cells transmit nerve signals and regulate water levels in tissues and blood.

Various elements on the periodic table have numerous impacts on human welfare.

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Answer:

The limiting reagent (or limiting REACTANT or limiting agent) in a chemical reaction is the substance that is totally CONSUMED when the chemical reaction is COMPLETE. The amount of product formed is limited by this reagent, since the reaction cannot CONTINUE without it.

ANSWER:

it GIVES FeCl3

Explanation:

3HCl+Fe+S-->FeCl3+H2S

Answer:

zinc sulphate will be formed

Explanation:

Blue colour sol is CUSO4 ( copper sulphate)

when ZN reacts with CuSO4 sol. DISPLACEMENT REACTION takes place and ZnSO4 will be formed as Zn is more REACTIVE than Cu. The colour of the final sol. will be colourless.

ANSWER:

when an acid is DILUTED then concentration of OH MINUS ion DECREASES

the G STOMS of ELEMENT in 40KG is 1000

ANSWER:

BLAST furnace

Explanation:

because because it is WARMER in BOTTOM

ANSWER:

where m and N are INTEGERS (m

Answer:

hydrogen is USED in

• PREPARATION of acids
• chemical reactions
• hydrogenation
• as a a ideal fuel in vehicles

chlorineis used in

• manufacturing of hydrochloric acid.
• in preparation of COMMON salt
• in manufacturing of chlorine tablet which ACTS as a disinfect in water
• in preparation of PVC

Sodium hydroxide is used in

• making of paper
• making of soap
• titration
• manufacturing other compounds

It is called alkene.

Addition of hydrogen to a carbon-carbon double bond is called hydrogenation. The overall effect of such an addition is the reductive removal of the double bond functional group. Regioselectivity is not an ISSUE, since the same group (a hydrogen atom) is bonded to each of the double bond carbons. The simplest source of two hydrogen atoms is molecular hydrogen (H2), but mixing alkenes with hydrogen does not result in any discernible reaction. Although the overall hydrogenation reaction is exothermic, a high ACTIVATION ENERGY prevents it from taking PLACE under normal conditions. This restriction may be circumvented by the use of a catalyst, as shown in the following diagram.

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Explanation:

It is because The electric FIELD will be zero at 6.67 cm distance from 80 MICRO coulomb. Let the electric field will be zero at point O. Two point charges 20 micro coulomb and 80 micro coulomb are 10 cm apart at point A and B.Mark as Brainliest

Answer:

Cotton and silk are natural fibres and are HENCE delicate, thus storing them in EXTREME temperatures or fluctuating temperatures MUST be avoided. If stored in too much fluctuating temperatures, then there are chances of fabric thread BREAKING up or getting brittle.

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Please SEE the attachment.

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Answer:

It is actually easy to separate out the mixture of sulphur, common salt and sand. ... Then the FILTRATE must be evaporated that will leave salt behind. You can add carbon disulphide to the SOLUTION of sulphur and sand that will dissolve sulphur and you can then filter the solution in the carbon disulphide.

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Explanation:

SOLUTION is different from the other two types of MIXTURES because solution mixture of ONE solid ingredient and liquid while the other two types of mixtures are mixed with solid and solid or liquid and liquid... it must be 42to 90 percent correct

Meyer is best known for his part in the periodic classification of the ELEMENTS. He noted, as J. A. R. NEWLANDS did in England, if each element is arranged in the ORDER of their atomic weights, they fall into groups of similar chemical and PHYSICAL properties repeated at periodic intervals.

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Answer:

6 G

Explanation:

1 MOLE (6.022×10^23 no. of C atoms) has mass = 12 g

hense 3.011×10^23 atoms of C have mass 12/2 = 6 g.

ANSWER:

molarity=no of moles of solute present in 1 LITRE of SOLUTION

This is because NYLON cannot absorb SWEAT from our SKIN and they do not FEELS us cool. As well as it stick to our FOOT and they don't feel us comfortable.

ANSWER:

the pm was ILL. some ministers HEARD the NEWS and WENT to meet him

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ALKALIES:All the bases that are soluble in WATER are called alkalies

They are DIFFERENT from bases as all the bases are not soluble in water.

ANSWER:

SOLID PARTICLES deposit at the BASE of the vessel because they are heavy compared to the liquid particles

Answer:

The VELOCITY of an electron PLACED in THIRD ORBIT of H atom will be 7.29×107 cm/s ( its 10 raise to 7 )

ANSWER:

princepal QUANTUM NUMBER n is equal to ORBITALS

ANSWER:

priyal

Explanation:

as cotton clothes ALLOW PASSING of AIR

ANSWER:

Sodium, hydrogen, carbon dioxide and sodium CHLORIDE are substances. Sea water, air, milk, and WOOD are mixtures of substances. ... Examples of compounds are water, carbon dioxide, sucrose and sodium chloride (and other salts) and inorganic ACIDS and bases such as HCl and NaOH.

Explanation:

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Explanation:

Molarity is defined as number of moles divided by the volume (in liters). Molality is defined as the number of moles divided by the MASS of the solution (in kg). molality = no. of moles of SOLUTE/ WT. of SOLVENT. if density of solvent is given we can find out relation between molality and morality..

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Answer:

u, the UNIFIED atomic MASS unit, used to express atomic and MOLECULAR MASSES.

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Explanation:

the SPIN ANGULAR momentum of an electron is always S=1/2. but the PROJECTION of the spin angular momentum is not SPECIFIED . it is an unpaire electron so it can be either up to (+1/2) or down (-1/2) if no EXTERNAL magnetic field is applied.

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