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(CU TUBE at 200 DEGREE Celsius)------->CH3OH

c hydrides are USUALLY nonstoichiometric compounds, as expected from their relatively low HEATS of formation and the mobility of hydrogen. They are ORDINARILY described, CHEMICALLY, in terms of any of three models in which hydrogen is considered a small INTERSTITIAL atom, a proton, or a hydride anion

measure the absolute entropy and INTERNAL energy or enthalpy? Why?We can measure the absolute entropy of a substance because of the existence of the third law of thermodynamics. It basically says that the entropy of a perfect crystal at absolute zero is 0. With your LOWER reference point as 0, you can be assured that any entropy you measure above that will be its absolute. LET’s say you have a ruler marked from x to y and 0 to y. When you measure with the former, you can only get a RELATIVE sense because the lower bound cannot be determined. We know that from x, it is y length long but what we do not know is the value of x. However, in the second case, you can get an absolute sense as the lower bound is well defined as 0.We cannot measure absolute enthalpy or internal energy for the same REASON as stated above. There is no lower reference point we can take with absolution, so we have to develop a relative scale.

ucture of BROMETHANE is CH3-Br

hloride + AQ. KOH - - - > ETHYL ALCOHOL

ecause it CONTAINS all MINERALS...

he layer in a soil profile below the B HORIZON and immediately above the bedrock, CONSISTING CHIEFLY of weathered, partially DECOMPOSED rock.mark me has BRAINLIST

openeB)1-methlycyclohexeneC) 1,3-butadiene

Waal's radius is the SMALLEST radius AMONG ionic, METALLIC, COVALENT and VAN der Waal's radii.

estion.s-s BOND is stronger than p-p bond.This is because of the shape of the s-orbital which is spherical. This MEANS the electron CLOUD is CLOSER to the nucleus than in p-orbital.

ctron FAR from ATOMIC NUCLEUS will have more POTENTIAL ENERGY...

APOURCARBON DIOXIDEMETHANENITROUS OXIDEOZONECHLOROFLUOROCARBONS (CFC)HYDROFLUROCARBON(HFC)

ncer is the most COMMON disease caused due to HOLE in the ozone layer because ozone layer protects US from the harmful radiation of sun which causes skin DISEASES.

not MIX PROPERLY ,i.e. they form a HETEROGENEOUS MIXTURE .They can be easily separated by BRINGING a magnet near it which will attract the iron fillings .Hope it helps !!!Plz. mark as brainliest !!!

partial negative charge on N atom in one ammonia molecule and partial POSITIVE charge on ANOTHER H atom it forms intermolecular hydrogen bond. There is very LESS electronegativity difference between H and P and hence there is no intermolecular hydrogen bonding.

s COMBINES TOGETHER

of an ATOM is the distance from the centre of the nucleus to the valence electron of the atom.1) Along a group: The atomic radius increases from top to BOTTOM in a group due to addition of NEW shell.2) Along a period: The atomic radius decreases from LEFT to RIGHT in a period because of increasing effective nuclear charge.I hope this helped you. All the very best for your studies.

not COMPLETE ANSWER but I HOPE you UNDERSTAND me

............MAY be not CONFIRMED

r MODEL considers electrons to have both a known radius and orbit, which is impossible according to Heisenberg. The Bohr Model is very limited in terms of size. Poor SPECTRAL PREDICTIONS are obtained when LARGER atoms are in question. It cannot predict the relative INTENSITIES of spectral lines.

ile SUBSTANCE and NON VOLATILE SOLID substance can be separated by sublimation

itial CARBIDES

₹₹₹₹₹₹₹₹₹₹₹HOPE HELP YOU₹₹₹₹₹₹₹₹₹₹₹₹₹₹₹₹₹₹₹₹₹₹₹₹₹₹₹₹₹₹₹₹₹₹₹₹₹₹HESS's Law of Constant HeatSummation (or just Hess's Law) STATES that regardless of the multiple stages or steps of a REACTION, the total enthalpy change for the reaction is the SUM of all changes. This law is a manifestation that enthalpy is a state function

any DOUGHT PLEASE ASK me

gular MOMENTUM is GIVEN by 5h/2pi.

$$$$$$$$$$HOPE HELP YOU$$$$$$$@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@The gas constant R is 8.314 J / mol. K. Convert the NUMERICAL value of R so that its units are cal / (mol. K). A unit conversion table will tell you that 1 cal = 4.184 J. MAKE SURE you know where to find it

hexametaphosphate (SHMP) is a hexamer of composition (NaPO3)6.[2] Sodium hexametaphosphate of commerce is typically a mixture of polymeric metaphosphates, of which the hexamer is one, and is usually the compound referred to by this name. It is more CORRECTLY TERMED sodium polymetaphosphate.Sodium hexametaphosphate[1]NamesOther namesCalgon SGlassy sodiumGraham's saltHexasodium METAPHOSPHATE

y for control of environmental pollutionThe environmental consequences of rapid industrialization have resulted in countless incidents of land, air and water resources sites being contaminated with toxic materials and other pollutants, threatening humans and ecosystems with serious health risks. More extensive and intensive use of materials and energy has created cumulative PRESSURES on the quality of local, regional and global ecosystems.Before there was a concerted effort to restrict the impact of pollution, environmental management extended little beyond laissez-faire tolerance, tempered by disposal of wastes to avoid disruptive local nuisance conceived of in a short-term perspective. The need for remediation was recognized, by exception, in instances where damage was determined to be UNACCEPTABLE. As the pace of industrial ACTIVITY intensified and the understanding of cumulative EFFECTS grew, a pollution control PARADIGM became the dominant approach to environmental management.Air pollution control equipment was created to lower emissions in order to comply with environmental regulations currently in place and future regulations. Air pollution control equipment also has to work within the confines of an industry's processing methods and schedule and fit in their budget. There is air pollution control equipment for the different needs of different industries including those who need to control dust emissions, acid gas emissions and NOx emissions. The air pollution control equipment operates differently in different industries.

ion EnthalpyIonization Enthalpy of ELEMENTS is the amount of energy that an isolated gaseous atom requires to LOSE an electron in its ground state. Losing of electrons results in the formation of cations.The first IONIZATION energy of element A is the energy required by an atom to form A+ IONS.  The unit of ionization energy is given as KJ mol-1.A (g) → A+ (g) + e–An element's metallic properties refer to its propensity to behave like the elements that are classified as metals in the periodic table.This depends on the set of chemical properties commonly associated with the metallic elements, specifically the ability of an element to lose its outer valence electrons.The metallic character of an element depends on how readily it can lose its electrons. This results in the element exhibiting chemical properties like the ability to be reduced, the ability to form ionic chlorides and basic oxides and the ability to displace hydrogen from dilute acids. Metallic character decreases from left to right and increases from top to BOTTOM on the periodic table.

uestion's ANS u want MARK the ques NUMBER

yl ALKYL amines are less basic because the electrons present in N participate in the resonance HENCE decrease BASICITY but alkyl amines don't show resonance and high electron density of N is maintained so it is more basic.Hope this helps

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