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what do u mean by viscosity??

✍️Viscosity is a PHYSICAL property of fluids. It shows RESISTANCE to FLOW. In a simple example, water has a low viscosity, as it is "thin".

✍️If the lava is thin (low viscosity), then it just flows out like water.

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The MOLECULES then have a disordered arrangement, but sufficient cohesion to maintain some rigidity. In this state it is often called an amorphous solid orglass. Some people claim that glass is actually a supercooled LIQUID because there is no FIRST ORDER phase transition as it cools.

The jahn-teller theorem essentially states that any NONLINEAR MOLECULE with degenrate electronic GROUND state will UNDERGO a geometrical disturtion that removes that degeneracy.

Metals in middle of the reactivity series are found in its sulphide or corbonate ores.calcination is a process of HEATING the ORE with limited or no supply of air.the PRODUCTS are metal oxide with carbon dioxide.roasting is a process of heating the ore with supply of air.products are metal oxide along with sulphur dioxide.
example :Zn
ZnCO3-->ZnO+CO2
2ZnS+3O2-->2ZnO+2SO2
metals of HIGH reactivity are obtained using electrolysis reduction
example:NaCl-->(Na+)+(Cl-)
the metals of reactivity are found in chlorides

Copper metal slowly REACTS with water, carbon DIOXIDE and OXYGEN present in air to form basic coppercarbonate which is green in colour. Its layer slowly GETS deposited on the SURFACE of the metal.

A salt formed from reaction of a WEAK base and a strong ACID should give anacidic solution. For example, NH4CL is formed from the reaction of NH3, a weak base, and HCl, a strong acid. The chloride ion will not hydrolyze. ... FLUORIDE is the conjugate base of HF and PRODUCES hydroxide ions insolution.

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Hyper-conjugation is the stabilizing interaction that RESULTS from the interaction of the electrons in a σ-BOND (usually C-H or C-C) with an adjacent empty or partially filled p-orbital or a π-orbital to give an extended molecular orbital that INCREASES the stability of the system.

Based on the valence bond model of bonding, hyper-conjugation can be described as "double bond - no bond resonance" but it is not what we would "NORMALLY" call resonance,

so now consider the structure of primary, secondary and tertiary carbocation,

and you will see that primary carbocation have a beta carbon that may have 2 or three possibilities of resonance structure as their are three hydrogen_carbon sigma bond which can be moved to between carbon_carbon as pi bond simultaneously.

and secondary carbocation has 4 to 6 possibilities of different resonance structured and SIMILARLY tertiary carbocation has 6 to 9 possibilities of different resonance structure on the basis of hyper-conjugation.

and as we know that a molecule that has more resonance structure is more stable and vice versa….

so therefore 3 degree ie tertiary carbo-cation has more stability than other two and secondary carbo-cation has more stability than primary one.

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And U PROVIDE just 5 POINTS

i) the main reasons for pollution are

increasing of exhaust gas from vehicles is mainly made of carbon di oxide and nitrogen as we know both the gases are harmful

toxic gas from industries are RELEASED into air without proper treatment this reacts with water vapour to form acid rain

ii)  primary pollutants: these are EMITTED directly from a source hence they are called  primary pollutants

secondary pollutants :  these are not directly produced but are FORMED when primary  pollutants react with environment

iii) two water BORNE diseases are malaria and cholera

iv) global warming is the process when gases like CARBON DI OXIDE form a layer around earth and do not let the heat escape as a result the temperature INCREASES and calamities occur

v) it is advisable to switch off  engine at red light as it reduces the pollutants and also saves petrol

vi) photo chemical smog means haze created in the atmosphere accompanied by high levels of ozone and nitrogen oxide , caused by action of sunlight on pollutants

the MAY be C I HOPE it will be RIGHT

Nature through water cycle and at HOME through TAPS we can observe water and through the change of states of matter LIKE ice to water to water vapour and GOES on

At commonly used concentrations and ordinary temperatures, there is nothing that would remove one of the products from solution. All you have is an aqueous solution CONTAINING all the ions from both salts. And if the solution is allowed to evaporate at anything resembling a NORMAL TEMPERATURE, the first salt to precipitate will be KCl once again.

If you were able to boil the resulting solution at a temperature significantly above the normal boiling point of WATER (maybe some kind of pressurized container that allowed you to gradually boil off water at 140C and 4 atmospheres pressure), you could probably get NaCl to precipitate first, leaving KNO3 in solution; its solubility increases very little with temperature while KCl becomes significantly more soluble.

The tricarboxylic acid cycle or Krebs cycle is one of the MAJOR processesinvolved in aerobic respiration. THISPROCESS occurs in the mitochondria, spefically in the mitochondrial matrix. This cycle basically uses acetyl CoA to form ATP, Cabon dioxide, NADH and FADH. ... FAD in the mitochondria isoxidized into FADH.

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TAKE two burning candles and two glasses. Put each candle under each glass separately. One should have oxygen INSIDE the glass and the other shouldn't have it. The glass in which the oxygen is PRESENT will last longer that means the candle BURNS until all the oxygen inside the glass is used up. This shows that oxygen HELPS in burning.

Because electric CURRENT seperate H2O (WATER) and form H and O, ALSO called decomposition REACTION

Alcohols are soluble in WATER. ... the reason why the solubility decreases as the LENGTH of hydrocarbon chain increases is because it is requires more energy to OVERCOME the hydrogen bonds between the alcohol  molecules as the molecules are more TIGHTLY packed together as the SIZE and mass increases.

6.14 is been the POTASSIUM I.p

The Properties & Composition of LPG - Propane. LPG is PRIMARILY COMPOSED of propane, butane, ISOBUTANE and mixtures of these GASES. LPG exists asliquid or gas (vapour), depending on PRESSURE and temperature

1. use of BLACK painted surface
2. use of insulated box with GLASS cover

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Physical PROPERTIES of Benzene. Benzene is the parent of hydrocarbon and FORM which is aromatic COMPOUNDS can be derived

4) Fe+O2 ------) FeO2 Name of ELEMENT FORMED is FERROUS OXIDE

Na2PbO2 is the FORMULA

ĀNSWĒR ⏬⏬⏬


✴ Oxygen has 6 paired ELECTRONS

✴Oxygen has TWO UNPAIRED electrons.

THANKS ✌✌

Presbyopia is CAUSED by a hardening of the LENS of your EYE, which occurs with aging. As your lens becomes less flexible, it can no longer change shape to focus on close-up images. As a RESULT, these images appear out of focus.

I THINK INCREASES because of MASS

We can CALCULATE the STRENGTH of a SOLUTION by PH SCALE.

A covalent bond REPRESENTS a shared electron pair between nuclei. The Stability of covalent bonds is due to the build-up of electron density between the nuclei. Using Coulomb's law (discussed in IONIC Bonding), you should note that it is more STABLE for electrons to be shared between nuclei than to be near only one nucleus. Also, by sharing electron PAIRS nuclei can achieve octets of electrons in their VALENCE shells, which leads to greater stability.

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# Oreo cookies-
- Oreo is the most popular and best-selling cookie in the WORLD from many YEARS.
- It has TWO wafers with cream in between
- The cookies are vegan and kosher
- Oreo first appeared on the market in 1912.

# Cookie/Cream RATIO-
Almost every Oreo cookie is exactly 71% cookie and 29% cream.
Exceptions to this ratio-
- Double Stuf
- Mini Oreos
- Mega Stuf
- Oreo Thins


Hope this was INTERESTING...

That you will be UNDERSTAND by FORMULA

The ph of AQUA solution is 3

I HOPE it HELP you!

I THINK it MAY be OPTION a)

Chemists Joel Rosenthal and Daniel G. Nocera of the Massachusetts Institute of Technology provide this ANSWER. When molecular hydrogen (H2) and oxygen (O2) are combined and allowed to REACT together, energy is RELEASED and the MOLECULES of hydrogen and oxygen can combine to form either water or hydrogen peroxide.

The azimuthal quantum number is a quantum number for an atomic ORBITAL that determines its orbital angular momentum and DESCRIBES the shape of the orbital. The azimuthal quantum number is the second of a set of quantum numbers which describe the unique quantum STATE of an electron (the others being the principal quantum number, following spectroscopic notation, the magnetic quantum number, and the spin quantum number). It is also known as the orbital angular momentum quantum number, orbital quantum number or second quantum number, and is symbolized as ℓ (pronounced ELL).

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The EQUIVALENT WEIGHT is 8.