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Polyester/Cotton.

Nylon/Wool.

Nylon/Acetate.

Ramie/Polyester.

Ramie/Acrylic.

Wool/Cotton.

Linen/Cotton.

Linen/Silk.

The COMBINING CAPACITY of an element is called VALENCY and radical is the IONS which are formed after reaction.

The SYMBOL GIVEN here is METHANOL

Magnesium is a SILVERY white metal. The surface of magnesium metal is covered with a thin layer of oxide that helps PROTECT the metal from attack by air. Once IGNITED, magnesium metal burns in air with a characteristic blinding bright white flame to give a mixture of white magnesium oxide, MgO, and magnesium nitride, Mg3N2. Magnesium oxide is more NORMALLY made by heating magnesium carbonate. Calcium, IMMEDIATELY below magnesium in the periodic table is more reactive with air than magnesium.

At the first stage when COPPER reacts with CONCENTRATED nitric acid the METAL ion coordinates with nitrate IONS. This complex gives green color to the solution. The brown gas produced in the reaction is nitrogen dioxide
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The PERIODIC table is a chart of elements prepared in such a WAY that the elements having similar properties occur in the same vertical column or group. A periodic table consists of HORIZONTAL rows of elements CALLED periods and vertical columns called groups.

The modern periodic table was prepared by Bohr. The arrangement if elements in the modern periodic table is BASED on their electronic configurations.

There are seven periods in the long form or modern periodic table. The elements in a period have consecutive atomic numbers.

There are 18 groups in the long form of periodic table. The elements in a group don't have consecutive atomic numbers. But all the elements in a group have similar electronic configuration and show similar properties.

The real significance of the modern periodic classification based on atomic numbers is that it relates the periodicity in the properties of elements to the periodicity in their electronic configurations.

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Because dry ice is not water
it is CARBON DIOXIDE which directly gets CHANGE into GAS from solid through sublimation

It is a series of compound with the same FUNCTIONAL group and chemical properties

compounds with HOMOLOGOUS series have a FIXED group that gives the physical and chemical properties



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1) ATMOSPHERIC pressure and

2) The AMOUNT of impurities PRESENT in the water .

Kx-wt = ø( DIMENSIONLESS )

=>K = 1/[L]
= [L]^-1
wt = 1
W. = 1/[T]
w = [T]^-1

Solution of SULPHUR is HETEROGENEOUS mixture.
cs2 is DISSOLVED in WATER. so, the solution of cs2 is homogenous mixture.....

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Gas will remain same during HEATING ...


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Hydrochloric acid is used as a CATALYST for BAKELITE preparation.
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Answer:

Zno on heating turns YELLOW and becomes white when cold because When COLOURLESS ZnO is strongly HEATED, the metal atoms are deposited on CRYSTAL surface and anions 0^2- migrate to the surface producing vacancies at anion lattice points.

These anions combine with Zn atoms forming ZnO and rclease clectrons.

Zn+O^2- ---------> ZnO+2e^-

These released electrons diffuse into the crystal and occupy vacant sites of anions and produce F- CENTRES. Due to these colour centres, ZnO turns yellow.

That's true for benzene, but the methoxy-group in anisole isn't just o/p-directing. It is ACTIVATING as well. Actually, it's that much activating that anisole will react with bromine even without the presence of a Lewis acid.

So, why glacial acetic acid? It's a polar solvent and THUS nice to stabilize the Wheland intermediates. Moreover, it's easily removed in aqueous workup.

Edit 1 Does the acetic acid react with the (MOSTLY undissociated) acetic acid? At least a polarization of bromine (Brδ+−Brδ−⋅⋅⋅HOAcBrXδ+−BrXδ−⋅⋅⋅HOAc) is conceivable and I remember that BrOAcBrOAc has been postulated as the electrophilic species.

Edit 2 I remembered some brominations on dimethoxy-substituted hydroxymethylnaphthalines I did back in the days. The REACTION was performed at 60 °C in CHCl3CHClX3 in the presence of about 3 equivalents of anhydrous sodium acetate. Excess of bromine was reduced by addition of aqueous sodium sulfite. The yield was in the 85% range and I don't find any notes on dibrominated products.

Nitrobenzene means benzene ring and no2 group. Now no2 group is a META DIRECTING group. Where there is a meta directing group in any aromatic ring it reduces the reactivity of that ring. So the reactivity of benzene ring is REDUCED by no2 group and it is not more able to GIVE Fidel craft reaction.
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We can convert sea water into drinking water by the process of desalination.
In which reverse OSMOSIS TAKE PLACES due to which their is reverse flow of SOLVENT to pure water through semipermeable membrane.

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xylene is COMMONLY used in chemical reactions or functionally, to REMOVE paraffinfrom microscope slides. Additionally, it can be used to make baths with DRY ice. Thanks 4asking

The wet clothes quickly dry if put in sunlight because during sunlight is high only few vapour PARTICLES are PRESENT there.

and we also KNOW that
evaporation is inversly proportional to vapour

so if vapour is less than the evaporation ultimately increases

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There are seven elements that naturally occur as homonuclear diatomic molecules in their gaseous states: hydrogen, NITROGEN, oxygen,fluorine, CHLORINE, BROMINE, and iodine.

but ys hydrogen is metal.so dont confuse here.............

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in the endothermic reaction represent by +6 towards the reaction SITES because they evolution of HEAT and energy .they always gain so position of +6 represent
...

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A person breathes 7 or 8 LITERS of air per minute. Air is about 20%oxygen. But when you exhale, your breath is about 15% oxygen, so you consumed about 5%. Therefore, a person uses about 550 liters of pure oxygen eachday.

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The Nernst Equation is DERIVED from the GIBBS FREE energy under standard conditions. (1.3) Δ G o = − n F E o . The Equation above indicates that the electrical potential of a CELL depends upon the REACTION quotient of the reaction.

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The reaction is KNOWN as Catenation.

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We used to store stock 100mM Fmoc-aa in DMF at 4ºC for peptide synthesis and store peptides in solution at 4ºC. Your 100mM PHE and PP solutions in dH2O should be stable at 4ºC and room temperature. I would MAKE the 550mM Tyr in HCL fresh each time.

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↪ In a homogeneous mixture , the components COMPLETELY mix with each other and it's composition is UNIFORM throughout .
For eg. -- Sugar solution and Air


↪ In contrast to this , in HETEROGENEOUS mixtures , the composition is not uniform throughout and sometimes the DIFFERENT components can be observed .
For eg. -- Mixture of salt and sugar ETC..

By APPLYING pressure to vapour it converts to WATER and through CONDENSATION it changes to solid.(ICE)

10 metals are ....copper; silver; GOLD; aluminium ; iron; PLATINUM; ZINC ; potassium.; ; mercury; and gallium


non metals are
1 sulpher
2 carbon
3 phosphorus
4 bromine
5 chlorine

We NEED to FIND PB* which is the pure VAPOUR pressure of b. Pure means that there are no other compound THEREFORE Xb =1 . Putting 1 therefore Pb* = 100+200 = 300.

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In THERMODYNAMICS, chemical potentialof a species, is a form of energy that can be absorbed or released during a chemical REACTION or phase transitiondue to a change of the particle number of the GIVEN species. The chemical potential of a species in a mixture is defined as the rate of change of a free energy of a thermodynamic system with respect to the change in the number of atoms or molecules of the species that are added to the system. Thus, it is the partial derivative of the free energy with respect to the amount of the species, all other species' concentrations in the mixture remaining constant. The molar chemical potential is also known as partial molar free energy. When both temperature and pressure are held constant, chemical potential is the partial molar Gibbs free energy. At chemical equilibrium or in phase equilibrium the total SUM of the product of chemical potentials and stoichiometric coefficients is zero, as the free energy is at a minimum.

In semiconductor physics, the chemical potential of a system of ELECTRONS at a temperature of zero Kelvin is known as the Fermi energy.

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The percentage of non renewable ENERGY used in India is about 84%.

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1 remove old solvent
2 clean the area
3Apply nontoxic 100% SILICONE SEALANT to the leak area
4. Allow the sealant to dry. 
5. set TANK backup