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Specific GRAVITY is just a comparison between the weight of a volume of a particular material to the weight of the same volume of water at a SPECIFIED temperature.

The moment when we ADDED water, it will start to react with cement, and HENCE, for this reason, we are using KEROSENE as a substitute for water.

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here is UR answer... ⤵⤵

fundamentals means..

basic and important; from which everything ELSE develops...

hope it's help U

A SERIES of molecules in which the molecular diff. between 2 consecutive molecules is -CH2- and mass diff. is 14 u.
Features:
Mass diff. -14u
Molecular diff . -CH2-
GENERAL process of PREPARATION
Molecules of any homologous series have a general formula

I GUESS by DESTRUCTIVE DISTILLATION of ANIMAL BONES.

Radiations are type of a WAVE such as LIGHT wave is electromagnetic, radiation does not occupy SPACE and NEED not any specific medium to travel while matter occupies space

HEY MATE HERE IS YOUR ANSWER ^_^^_^

Transition state theory (TST) explains the reaction rates of elementary chemical reactions. The theory assumes a special type of chemical equilibrium (quasi-equilibrium) between reactants and activated transition state complexes.

TST is used primarily to understand qualitatively how chemical reactions take place. TST has been less successful in its original goal of calculating absolute reaction rate constants because the calculation of absolute reaction rates requires precise knowledge of potential energy surfaces,but it has been successful in calculating the standard enthalpy of activation (Δ‡Hɵ), the standard entropy of activation (Δ‡Sɵ), and the standard Gibbs energy of activation (Δ‡Gɵ) for a particular reaction if its rate constant has been experimentally determined. (The ‡notation refers to the value of interest at the transition state.)

This theory was developed simultaneously in 1935 by Henry Eyring, then at Princeton University, and by Meredith Gwynne Evansand MICHAEL Polanyi of the University of Manchester.TST is also referred to as "activated-complex theory," "absolute-rate theory," and "theory of absolute reaction rates."

Before the development of TST, the ARRHENIUS rate law was widely used to determine energies for the reaction barrier. The Arrhenius equation derives from empirical observations and ignores any mechanistic CONSIDERATIONS, such as whether one or more reactive intermediates are involved in the conversion of a reactant to a product.Therefore, further development was NECESSARY to understand the two parameters associated with this law, the pre-exponential factor (A) and the activation energy (Ea). TST, which led to the Eyring equation, successfully addresses these two issues; HOWEVER, 46 years elapsed between the publication of the Arrhenius rate law, in 1889, and the Eyring equation derived from TST, in 1935. During that period, many scientists and researchers contributed significantly to the development of the theory.

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The atomic SIZE of elements increases due to addition of new valence shells.
Also, metallic property / character increases down the group.

This is due to the fact that while moving down the group ionic radii increases so tendency to loose electrons is increased and HENCE they form Cation.



Across the period tendency of an ATOM to attract electrons is increased so their atomic size or ionic radius is decreased hence, it's size decreases and they forms an anion.

Due to an INCREASE in nuclear charge it results in a decrease of size of an atom.

Hence, the non-metallic character increases across a period.



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Lithmus paper test can be DONE SINCE ETHANOIC acid is acidic and ethanol is not.

ISOOCTANE is the CORRECT answer

Plz MARK it BRAINLIEST

Δ(CFSE)∝1λ(wavelength)  

[∆ or CFSE ∝ strength of LIGANDS]

HENCE, order of strength of LIGAND is :

L1(red)

The working electrode is the electrode in an electrochemical system on which the reaction of INTEREST is occurring. ... Depending on WHETHER the reaction on theelectrode is a reduction or an OXIDATION, theworking electrode is called CATHODIC or anodic, respectively.

-they form crystals
-they are BRITTLE .
-they CONDUCT ELECTRICITY but when they are dissolved in water
-they are good INSULATORS
-they have high melting and boiling points
-

When HYDROGEN gas is BURNT in air it reacts with OXYGEN gas forming water

Hello mate

 example of a covalent bond is the Cl—Cl bond in a CHLORINE molecule.Two chlorine atoms are attracted to the same pair of electrons. ... Each chlorine atom contributes one electronto the bonded pair shared by the twoatoms. The REMAINING SIX valenceelectrons of each chlorine atom are not INVOLVED in bonding.

First I will answer your second question. The no. of molecules in 93 moles of PHOSPHORUS WOULD be 93*Avagadro's No. I.e. 93*6.023*10^23

For your first question I will consider that you are TALKING about the P5 MOLECULE of phosphorus so 5 times the total no. of molecules of P5 would be your answer.

Hi
let's TAKE 1 mol as 6.02 * 10^23.
so,
12.04*10^23 is approx two mol.
1 mol of helium= 4g.
therefore 2 mol of helium is 8g
we have two mol of helium which is 8g.
bye

MOLECULAR mass of AlN=27+14=41

% of nitrogen= atomic WEIGHT of N ÷ molecular mass of AlN

= 14/41 = 34.14%

Valency of aluminium= 3
valency of NITROGEN= 3
nitride means there is no other element present in the compound.
thus formula of aluminium nitride = AlN. using CROSS METHOD. cross multiply the valencies together. That is it will become Al3N3, which can be cut down to simplest ratio of AlN.
there total no. of atoms in compound is 2.
thus percentage = 50%.
BYE

As down the group the no. Of ELECTRONS increase and new SHELLS come so the size of the elements increase due to weak nuclear attraction due to a GREATER distance and the shielding effect due to electrons I.e the electrons between another electron and the nucleus absorb or shield some of the energy reaching the other electron

Then WT is the further QUESTION

Hey there!!☺️
.

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Answer:- The PROCESS by which metal. CONTAINING IMPURITIES are purified electrically to give pure metal is known as ELECTROLYTIC refining.

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A OXIDATION REACTION can be called a combustion react when they REALEASE energy in FORM of heat

It is USED to WASH CLOTHES

Fractional distillation is the separation of a mixture into its component parts, or FRACTIONS. Chemical compounds are separated by HEATING them to a TEMPERATURE at which one or more fractions of the mixture will vaporize. It USES distillation to fractionate. Generally the component parts have boiling points that differ by less than 25 °C from each other under a pressure of one atmosphere. If the difference in boiling points is greater than 25 °C, a simple distillation is typically used.

Polar amino acids include serine, THREONINE, ASPARAGINE, glutamine, histidine and tyrosine. The HYDROPHOBIC amino acids include alanine, valine, leucine, ISOLEUCINE, proline, PHENYLALANINE, tryptophane, cysteine and methionine.

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S orbital have two SHELL and P orbitals have 5 shell

Here is ur answer :

Average atomic mass :

The  average atomic mass of an ELEMENT is the sum of the masses  of its isotopes, each multiplied by its NATURAL abundance (the decimal associated with percent of ATOMS of that element that are of a given isotope).

Average atomic mass of an element =

[ ( Atomic mass of Isotope I × percentage of isotope I ) + ( Atomic mass of Isotope II × percentage of isotope II ) ]

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Atomic mass of Isotope I = 35

Percentage of isotope I = 75%

Atomic mass of Isotope II = 37

Percentage of isotope II = 25 %

Average atomic mass of chlorine =

Therfore, average atomic mass of chlorine is 35.5 u

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REGARDS

gaintboy7050900

0.5 MOLE of METHANE reqired

As HYDROGEN and OXYGEN have COVALENT BONDS

1] CALCIUM

2] calcium and MAGNESIUM

MgO +H2O---> MG(OH)2

NaOH is the STRONGER base as it(sodium) is less ELECTROLYTE than POTASSIUM

PBO(LEAD OXIDE) is your ANSWER

Saturated HYDROCARBONS FORM single bond
unsaturated hydrocarbons form DOUBLE and MULTIPLE BONDS

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SEE the ATTACHMENT

Explanation:

Nh3 has a PYRAMIDAL STRUCTURE and the individual n-h BONDS gives the resultant dipole moment as 1.49 d so it has a non- zero value of orientation POLARIZATION whereas in case of bf3 it has a symmetrical structure due to dipole MOMENTS of the bonds cancel out each other giving net dipole moment zero

Where are the OPTIONS

Hello mate

The same can be done to a β-sheet, and in this case, the resulting STRUCTURE would be a β-barrel. Another form of a supersecondary structure is the helix-loop-helix, where TWO α-helices are CONNECTED by a β-turn. Any combination of secondary structures can be USED to PRODUCE a supersecondary structure.