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EXPLANATION:

H20 is correct ANSWER....

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Explanation:

For example, air can be speculated as a HOMOGENEOUS gas mixture while homogeneous SOLID mixtures can include alloys such as STEEL, bronze, brass and other mixtures such as mineral ores. Another TYPE of homogeneous mixture is CALLED a colloid.........................

EXPLANATION:

SOLUTION:-

2C2H6+5O2=2CO2+6H2O

ANSWER:

23 is correct answer......

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Explanation:

Proteins are macromolecules formed by amino acids. Proteins are large size molecules (macromolecules), POLYMERS of structural units called amino acids. A total of 20 different amino acids EXIST in proteins and hundreds to thousands of these amino acids are attached to each other in long chains to FORM a protein.................

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option D (4) is the CORRECT ANSWER because there are 4 valence electrons are there in it's OUTER most SHELL and it need 8 to make itself stable.

<P>Answer:

<U>GAS LAW:- Laws that relate the PRESSURE, volume, and temperature of a gas. Boyle's law—named for Robert Boyle—states that, at constant temperature, the pressure P of a gas varies inversely with its volume V, or PV = k, where k is a constant.

Explanation:

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ANSWER:

metal is soft

non metal is HARD

metal malleable, lustrous

and non metal pins OPPOSITE of this

Answer:

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Here's your answer

You don't have to shred leaves, but an easy WAY to do so is to simply run over them with your lawn mower. Then, throw all your leaves into your compost pile with grass clippings and mix them in well with a shovel or rake so that the newer leaves are buried under the older COMPOSTED material.

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Answer:

2Al+6HNO₃→2Al(NO₃)₃+3H₂↑

Another REACTION:

Al+4HNO₃→Al(NO₃)₃+2H₂O+NO

Answer:

BUTANE, or C4H10, has TWO structural (also called constitutional) ISOMERS called normal butane, or unbranched butane, and isobutane, or i-butane. According to IUPAC NOMENCLATURE, these isomers are called simply butane and 2-methylpropane.

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Next english mein QUESTION putup KARNA

Answer:

EXPLANATION:

Roof COATINGS can be ROUGHLY divided into solvent-based and water-based varieties. Solvent-based coatings, such as urethanes and silicones, TEND to last longer, but can be more expensive and require greater care in their application.

Answer:

SO3 is CORRECT answer........

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Answer: YES, MAGNESIUM IS A MODERATELY REACTIVE METAL

Explanation:

Reactive: Li-Lithium and NA sodium are reactive metals, Moderately reactive: CALCIUM, *magnesium* and zinc are moderately reactive metals, LESS reactive: Iron and COPPER are less reactive metReactive: Li-Lithium and Na sodium are reactive metals, Moderately reactive: Calcium, magnesium and zinc are moderately reactive metals, Less reactive: Iron and copper are less reactive metals.

Answer:

hey mate refer to above ATTACHMENT

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Answer:

In the WILFLEY Table method, the PARTICLES of gangue are separated by GRAVITATION based method.

Explanation:

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Explanation:

Paramagnetism is a FORM of magnetism whereby some MATERIALS are weakly attracted by an externally APPLIED magnetic field, and form internal, induced magnetic fields in the DIRECTION of the applied magnetic field.........

Answer:

11/14×6.022×10to the POWER 23

Explanation:

The geographical centre of EARTH is the geometric centre of all land surfaces on Earth. In a more strict definition, it is the superficial barycenter of the MASS distribution produced by treating each CONTINENT or ISLAND as a region of a thin shell of UNIFORM density and approximating the geoid with a sphere.

ANSWER:

Where are the REACTANTS?

ANSWER:

GRAPHITE have LUSTURE

Answer:

concentrated h2so4 is used for ESTERIFICATION using ethanoic acid and ethanol to produce esters.the part that h2so4 is that it protonates the acid molecule, which thus become an ELECTROPHILIC site.ethanol attacks the protonated molecule and thus the intermediate is formed.it is BASICALLY crucial to shift the equilibrium to the right and form the ester compound

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ANSWER:The answers for your questions are as follows:

The CHEMICAL FORMULA for

1)Sodium OXIDE is Na2O and

2)Magnesium Oxide is MgO

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Answer:

Explanation:

They allow the movement of ions from one solution to another without MIXING of the TWO solutions and COMPLETE the electrical circuit.To maintain the electical neutrality of the solutions in the two half cells.

EXPLANATION:

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Answer:

Explanation:

In the laboratory, methane is prepared by heating a MIXTURE of sodium ACETATE and soda lime. Soda lime is a mixture of sodium hydroxide and calcium oxide. ... Methane gas evolved is COLLECTED by the DOWNWARD displacement of water.

Answer:

Explanation:

(1) Nuclear reactions involve a changein an atom's nucleus, usually producing a different element. CHEMICAL reactions, on the other HAND, involve only a rearrangement of electrons and do not involve changes in the nuclei. (2) Different isotopes of an element NORMALLY behave SIMILARLY in chemical reactions.

ANSWER:

The answers for your QUESTIONS are here:

(a) Na>Mg>S>Si>Cl

(b) Li

(c) K

(d) I

(E) Li>Na>K>Rb>Cs

These answers are not simply written... As I am also a student of Chemistry and I have mastered these chapters, I thought I could help you in this question... A thorough DEEP knowledge about the subject makes me to write this perfect answer...

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Answer:

2 nodes

Explanation:

The quantum NUMBER ℓ DETERMINES the number of angular nodes; there is 1 angular node, specifically on the XY plane because this is a pz orbital. Because there is one node left, there must be one radial node. To sum up, the 3pz orbital has 2 nodes: 1 angular node and 1 radial node.

Answer:

Chemical formula of DENATURED ALCOHOL is C2H5OH

i.e. nothing but ethanol...

The EQUATION for preparation of ethanol is:

C2H5Br+KOH->C2H5OH+KBr

Note:

1)KOH USED is alcoholic

2)The reaction takes place on boiling.

Answer:

exampLe is:-ReactiOn of iron NAILS with COPPER sulphate solution. I HOPE that HELPS you.

Explanation:

generate SYSTEMATIC names for chemical COMPOUNDS. The nomenclature used most frequently WORLDWIDE is the one created and developed by the International Union of Pure and APPLIED Chemistry. The full FORM of IUPAC is International Union for Pure and Applied Chemistry.

Answer:

Explanation:

alkyl radical - any of a series of univalent groups of the general FORMULA CnH2n+1 derived from ALIPHATIC hydrocarbons. alkyl, alkyl group. chemical group, radical, group - (chemistry) two or more atoms BOUND TOGETHER as a SINGLE unit and forming part of a molecule.

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Explanation: The more REACTIVE halogen, Bromine, will remain as ions (BROMIDE) - the relatively large and floppy iodine atoms cannot oxidise (=STEAL an ELECTRON from) them.

Answer:

It can't form ch4

Explanation:

BCOZ in kolbes ELECTROLYSIS the alkyl part is produced with elimination of NA METAL

Answer:

1. BLEACHING Powder (Chem. name - Calcium Oxychloride)

2. SLAKED Lime (Calcium Hydroxide - Ca(OH)₂)

3. WASHING soda (Sodium Carbonate Decahydrate - Na₂CO₃.10H₂O)

4. It will decompose to give sodium carbonate, WATER and carbon-dioxide gas.

2NaHCO₃ ----------> Na₂CO₃ + H₂O + CO₂

5. Plaster of paris combines with water to form gypsum.

CaSO₄.½H₂O + 1½H₂O ------------> CaSO₄.2H₂O

EXPLANATION:

• secondary valence is4
• primary valences are satisfied by NEGATIVE IONS

ANSWER:

I don't GET it

Explanation:

It will be BETTER to answer if it is TRANSLATED in ENGLISH

Explanation:

An electric current is the rate of flow of electric charge past a point or REGION. An electric current is SAID to exist when there is a net flow of electric charge through a region. In electric circuits this charge is OFTEN carried by electrons moving through a WIRE.

1.heterogeneous mixture

2.physical change

3.by HANDPICKING because both TWO SOLID SUBSTANCES

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Explanation: Adsorption unbalanced residual forces. This causes a decrease in surface energy and THUS,adsorption is exothermic. Types of adsorption based on nature of forces between adsorbent and adsorbate: Physisorption: FORCE ACTING b/w adsorbent and adsorbate is weak vanderwaals force.

ANSWER:

EXPLANATION:

There are more particles in 1M NACL than in 1M GLUCOSE because of dissociation.

Explanation:

1)as lower alcohols have -OH grop they are polar also they are able to form hydrogen bonds which make them soluble 2)coming to higher alcohols they are insoluble as there will be large alkyl or WATER repellent GROUP 3)where as hydrocarbons they are non polar from the principle that LIKE DISSOLVES in like they are insoluble in water which is polar

(a) PCI6-  existing

(b) NH5 non existing

(c) PH5; non existing

(d) (CCl6)2- existing

(h) SH6 present

(i) XeH4, present

() XeOF4, present

(k) FCI3, non existing

(e) (SiCl6)2- existing

() CIF3-, non existing

(H (Sicije non existing

(m) BH, non existing

(g) CIBR, existing

(n) PIJ non existing

Explanation:

• there are many substances which have variable VALENCY. The variable valency is DUE to the presence of the orbital which filled if  by more number of electrons than the valence shell.

• As a result of this there are plenty of IONS or compounds that can be formed by a PARTICULAR type of atom

• the non-existing compounds or ions are those which does not feel the alternative variable valency of the particular element

To know more about variable valency,

valency and variable valency definition and example - Brainly.in

brainly.in/question/949977

ANSWER:

BROWN COLOUR of BROMINE DISCHARGED

ANSWER:

KINETIC energy  = 3nRT/2

                         =3 x 3 x 8.314 x (273+27)/2

                         =9 x 8.314 x 300 / 2

                         =22447.8 / 2

                         = 11223.9 Joules.

ANSWER:

DI CHLORO PROPANE is the answer

ANSWER:

There will not be any REACTIONS between them..