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Explanation:

The ELECTRONIC CONFIGURATION of 'N' atom is 2, 5 and to have Octet in the valence shell it requires three more ELECTRONS. When two NITROGEN atoms approach each other, each atom contributes 3 electrons for bonding. There are six electrons shared between two nitrogen atoms in the form of three pairs.

Answer:

NH4+ is KNOWN as an ammonium ion, but NH4 would not MAKE sense as it is not balanced. The lewis structure would be the Nitrogen atom in the center, with 4 hydrogens surrounding it. There would be no lone pairs, the molecule would ALSO be NONPOLAR.

ANSWER:

∆E = Q + w

∆E = 600 + (-450)

∆E = 150cal

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The preparation of butyne from ethene is HAPPENED by a perticular steps

• At first ethene is converted to ETHANE by adding HYDROGEN in the presence of nickel catalyst

• Then the ethane is converted to chloroethane by the addition of hydrogen chloride

• The chloroethane is converted to but-1-yne by the addition of sodium acetilide

And thus the total process for preparing the but-1-yne from ethene is completed.

there are 3 steps to complete the conversion of butyne from ethene

ANSWER:

metal which is good conductor of ELECTRICITY,heat,has SONOROUS and some physical properties . but NON metal is QUITE opposite

Explanation:

pH is defined as the NEGATIVE LOGARITHM of H+ ion concentration. HENCE the meaning of the name pH is justified as the POWER of hydrogen.. To determine the strength of acids and bases quantitatively, we use a universal indicator which shows different colours at different concentration of hydrogen ion in solution.

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ANSWER:

CA(OH)2+Cl2 == CAOCL2+ H2O

ANSWER:

THANKS process is KNOWN as the alkanation and it is also called as segmentation

Answer:

4 FORMYL 3 CHLORO 2 bromo BUTANOL

Answer:

COLLOIDAL solutions, or colloidal SUSPENSIONS, are nothing but a mixture in which the substances are REGULARLY suspended in a FLUID.

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Answer:

1. Nitrogen ( not a NOBLE gas)

2. O2 ( doesn't cause air POLLUTION)

3. growing TREES ( doesn't release SMOKE)

Answer:

13/3pi r3+16/3pi r3/8(r++r-)3

ANSWER:By HEATING SODIUM bisulphate

EXPLANATION:

no it cannot be seperated

EXPLANATION:

the LINE MOVES through the HOLE

ANSWER:

hiwkwkwiiwiiwjejdieiejsjsjdje

Explanation:

ESTERS have the general formula RCOOR′, where R may be a HYDROGEN ATOM, an alkyl GROUP, or an ARYL group, and R′ may be an alkyl group or an aryl group but not a hydrogen atom. (If it were hydrogen atom, the compound would be a carboxylic acid.)

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ANSWER:

the ANSWERS is GIVEN above

Answer

Dobereiner's law of triads STATES that, the atomic mass of the MIDDLE element of a triad is the arithmetic mean of the atomic MASSES of the other TWO elements. Example: In the triad of lithium, sodium and potassium. ... All the known elements could not be arranged in the form of triads.

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ANSWER:

the ANSWERS is GIVEN above

ANSWER:

difference between any TWO ENDS is known as POLARITIES

ANSWER:

the dissolved substance cannot be SEE in HOMOGENOUS but can be see in heterogeneous

complete mice of the solvent in homogenous but INCOMPLETE MIX of solvent in heterogeneous

ANSWER:

the answer is B) sulphur

Explanation:

as sulphur reacts with nitric ACID to fine SULPHURIC acid

Answer:PbNO3 ----> PbO + NO2 + O2

When LEAD nitrate is heated in a TEST tube, we can OBSERVE two different colors. This is because, on HEATING, PbNO3 decomposes into lead oxide(PbO) which is yellow in COLOR and Nitrogen dioxide (NO2) is formed which is yellowish-brown.

Also, oxygen gas is evolved.

Explanation:

Answer:

Ionic COMPOUNDS conduct electricity when molten (liquid) or in aqueous solution (dissolved in WATER), because their ions are FREE to move from place to place. Ionic compounds cannot conduct electricity when SOLID, as their ions are held in fixed POSITIONS and cannot move.

Explanation:

Answer:

now DAYS water is PURIFIED by a huge MACHINES by taking several STEP some like that

water taken from sea we are do EVAPORATE

and such other step

Answer:

You ACTUALLY just NEED to remember the keywords like, Hydrogen's placement , ISOTOPES , noble gases , etc. .

In my opinion it'll be easier to learn it like this

<STRONG>Answer:

The oxides of beryllium, that is, BeO are AMPHOTERIC whereas other oxides of ALKALINE earth metals are strong bases. Beryllium do not impart color during FLAME test. Beryllium is small in size with high ionization enthalpy compared to other alkaline earth metals

ANSWER:

i THINK answer is70

Explanation:

i hope it helps you

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LITMUS PAPER CHANGE in BLUE COLOUR .

Answer:

THREE SIGMA bonds

We can see that 2-butyne consist of 2 single bonds and one TRIPLE bond. A single bond is a sigma bond while a triple bond consists of a sigma bond and two PI bond. THUS, 2-butyne has three sigma bonds.

Answer:do you WANT to know the CONCENTRATION of C6H6???

EXPLANATION:

Answer:

According to quinonoid theory, an acid-base indicators exist in two tautomeric forms having different structures which are in equilibrium. ONE FORM is TERMED benzenoid form and the other quinonoid form. The change in pH converts one tautomeric form into other and thus, the colour change OCCURS.

Element Symbol. MASS Percent

ZINC ZN 52.142%

Zinc(II) Carbonate. Name: Zinc(II) Carbonate. FORMULA: ZNCO3.

▬▬▬▬▬ஜ۩۞۩ஜ▬▬▬▬▬▬

a) Fe + 2HCl -----> FeCl2 + H2↑

b) AL + 2KOH -----> Al(OH)2 + 2K

c) Pb + 2NaOH -----> Pb(OH)2 + 2Na

d) ZN + H2SO4 -----> ZnSO4 + H2↑

e) CO + H2 + H2O ------> CO2 + 2H2 ↑

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ANSWER:

CA + H2O= Cao+H2

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Answer:

Hey!!! ^_^

The PICTURE ATTACHED PROVIDES you the solution.

The physical states are MENTIONED too...

ANSWER:

are YRR SIMPLE HAI

SE it

The process of DISSOLVING an acid or a base in WATER is a highly exothermic one. Care must be taken while mixing concentrated HNO3 acid or H2SO4 with water. The acid must always be ADDED slowly to water with constant stirring. If water is added to a concentrated acid, the heat generated may cause the mixture to splash out and cause burns. The glass container may also break due to excessive local heating

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Carbon dioxide PASSED into limewater gives a milky SOLUTION. This is DUE to the insoluble suspension of calcium CARBONATE formed: Ca(OH)2(aq) + CO2(g) → CaCO3(s) + H2O(l) ... The milkiness disappears since calcium bicarbonate is water-soluble.

Answer:

In CO2, Carbon can only LOSE oxygen,it cannot gain anymore.

But, in CO, it can gain as well as lose Oxygen.

Therefore, CO2 only loses O and acts ALWAYS as an OXIDIZING agent. Whereas, CO gains as we're as loses O therefore can act as oxidizing and REDUCING agent depending on the reactants.

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Alkali metals are NEVER found in their elemental form outside the LAB because they are too reactive. Even the SMALLEST AMOUNT of oxygen or water would react with the metal. For this REASON, alkali metals have no structural use.

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Answer:

caustic SODA will ABSORB the CARBON dioxide

Answer:

. Atomic Structure and Interatomic Bonding ... Atomic Bonding ... SECOND quantum number L: SHAPE of the electron subshell ... LARGE difference in ELECTRONEGATIVITY required.

Answer:

here is the answer

Explanation:

+I GROUP always decreases the asidic NATURE of the COMPUND...

we KNOW that VAPOUR density=molecular MASS/2

so, molecular mass of the compound is 60

now,EMPIRICAL mass=12+16+2=30

molecular mass=60

n=molecular mass/empirical mass

n=60/30

n=2

so,molcular formula will be n×empirical formula=2×CH2O

=C2H4O2

so ANSWER is option B)

ANSWER:

C is your answer .......

write all the materials in EASY language and use some tricks for REMEMBERING the EQUATIONS .

you should also take help of old year PAPERS and with their solutions.

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Answer:

44.8 LITRES of CARBON DIOXIDE

EXPLANATION:

tetrasulphate-

platinum-di-bromo