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50651.

Gas can be liquefied easily by applying pressure and reducing temperature. true or false ​

Answer»

Hope it HELPS you.Explanation:Hemoglobin, or Hb, is a protein molecule found in RED blood CELLS (erythrocytes) made of four subunits: two alpha subunits and two beta subunits (Figure 20.19). Each subunit surrounds a central heme GROUP that contains iron and binds one OXYGEN molecule, allowing each hemoglobin molecule to bind four oxygen molecules.

50652.

Why does hydrochloric acid and sodium carbonate produce carbon dioxide??

Answer»

Both metal carbonates and bicarbonates get readily DECOMPOSED by mineral acids with EVOLUTION of carbon DIOXIDE (CO2) bubbles. When hydrochloric acid is added to SODIUM carbonate, BRISK effervescence of CO2 occurs, along with the formation of sodium chloride and water.

50653.

WHAT HAPPENS WHEN a) Borax is heated strongly b)Silicon dioxide is reacted with HF c) Silicon is heated with Methyl chloride at high temperature in the presence of copper.​

Answer» TION:(a) Silicon is heated with methyl chloride at HIGH temperature in the presence of copper catalyst at 537 K, methyl substituted chlorosilanes MeSiCl 3 ,Me 2 SiCl 2 ,Me 3 SiCl and Me 4 Si are formed.(b) When silicon dioxide is treated with hydrogen fluoride, first SiF 4 is formed and then hydro fluorosilicic acid is obtained.SiO 2 +4HF→SiF 4 +2H 2 OSiF 4 +2HF→H 2 SiF 6 (C) When CO is heated with ZnO, ZnO is reduced to Zn metal.CO+ZnO Δ CO 2 +Zn(d) When hydrated alumina is treated with aqueous NaOH solution, it dissolves to form SODIUM meta aluminate.Al 2 O 3 .2H 2 O+2NaOH→2NaAlO 2 +3H 2 O
50654.

VUsaid to3 If 25 g Ng reacts with 88 M₂form ammonia. Find ​

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magine two baseballs are being thrown at you. One is traveling at 50 mph and the other at 150 mph. Even if you somehow catch that 150 mph ball, it might knock you off your feet. It will take more effort on your part to stop the 150 mph ball than the 50 mph one. So it stands to reason that velocity is a very important ASPECT of momentum. However, that's not all there is to momentum.Now imagine two balls being thrown at you at 50 mph. One is a baseball and the other is a BOWLING ball. You probably aren't going to want to try to stop the bowling ball. It's going to keep traveling even after it hits you. Both balls are traveling at the same velocity, so what makes the bowling ball so much harder to stop? It's because it is heavier. It has more mass. So the other important aspect of momentum is mass.In physics, we define momentum mathematically as the multiplication of mass and velocity as seen in this equation: p = m * vp = momentumm = massv = velocityAs FAR as momentum's units GO, we have no special symbol used just for momentum. Instead, it is simply the combination of mass's standard unit of kilograms (kg) and velocity's standard unit of meters per second (m/s). Momentum is measured in standard units of kilograms TIMES meters per second (kg m/s).

50655.

Why is PbCl4 is good oxidising agent ?​

Answer»

They act as an inert pair of electrons and this LEADS to increased STABILITY of +2 oxidation state in group 14 elements. ... Hence Pb4+ can EASILY gain 2 electrons to FORM more STABLE Pb2+ ions thereby acting as a strong oxidising agent.please mark as brainlist answer

50656.

6. To nuetralize completely 20 ml of 0.1m aqueous solution of phosphorus acidH₃PO3, the volume of 0.1m aqueous Kohrrequired is

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by EQUATING normalityN1V1=N2V2N=M×no. of ionsso,60 ml is required to neutralize ithappy HOLI please MARK as brainliest

50657.

Aluminium is better than copper for making electric transmission . justify (using chemistry)​

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Because it's cheaper and lighter than a copper wire of the same resistance per length; about 6 times cheaper and TWICE as light as copper. Aluminum has 61% CONDUCTIVITY of copper, but only 30% of weight. ... Since aluminum is ROUGHLY about 3 times cheaper than copper, a bare aluminum cable would cost about 6 times less

50658.

8. எதிர்பார்ப்புக் கோட்பாட்டை அளித்தவர் ஆல்பிரட்உரும் விக்டர்ராபின்சன்மாஸ்லோஅமைப்பின் பழமைக் கோட்பாட்டை​

Answer»

மாஸ்லோExplanation:Nanum Tamil tha...PLS MARK my ANSWER as BRAILIEST ✨✨✌️

50659.

Displacement reaction does not take place when copper is added to ferrous sluphate solution. why?

Answer»

ron is more reactive than COPPER, that means it has a greater tendency to lose electrons and form positive ION, displacing copper ion in copper sulphate solution. ... The reaction between copper and ferrous sulfate will not OCCUR because copper is LESS reactive than iron.mark as brainliest

50660.

Does K2[Pt(en)2Cl2] give white ppt with AgNO3​

Answer»

NoExplanation: According to Werner's THEORY of Co-ordination compounds, Secondary valancy is non-ionisable. Here, Chlorine is LINKED directly to the central metal atom is HENCE is secondary entity and is non-ionisable.Since, it does not dissociate into It does not GIVE PRECIPITATE with AgNO3.RegardsKshitij

50661.

Explain structural isomerism in organic compounds​

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Isomerism in organic chemistry is a PHENOMENON shown by TWO or more organic compounds having the same molecular formula but different PROPERTIES due to difference in arrangement of atoms ALONG the carbon skeleton (STRUCTURAL isomerism) or in space (Stereo isomerism).

50662.

7. Write the cell representation when Cu metal electrode dipped in molar solution of Cu, Salt, Coupled withHydrogen electrode having IMHCI solution at 1 atm pressure. (Er/cu) = 0.34V(SECTION C)​

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idodjdjdopepelwendkdpExplanation:sjdoofkgkofowjjsorkrmnfnkspwlemdnjfkdlmdbfjckcngkdppwlfmnfkdpwkdjjfofjeg bdbfifpjehdidkdbduidkdhhdjoemfbhcjdkdkdjjfjdkfnfjhfieikshdhduudjf vifod fidnrodkjr

50663.

Ores of magnesium and calcium​

Answer»

don't KNOW SORRY THANKS BYE

50664.

How to convert 1,3 dihydroxy phenol to 1(2,4 dihydroxy phenyl) ethanal​

Answer» TION:by ADDITION REACTION methy
50665.

What do you mean by dehydration, neutralization and water of crystallization?each 1marks carry ​

Answer»

re!!Dehydration: It is the process of removal of water molecules in a chemical reaction. Neutralization:It is the reaction in which an acid and base REACT with each other to neutralize each other's effects to FORM a salt and water. For example:HCl + NaOH ----> NaCl + H2OWater of crystallization:It is the fixed number of water molecules for one formula unit of a molecule. It influences the physical and chemical properties is the substance. For example, one molecule of Gypsum (CaSO4.2H2O) contains 2 molecules of water of crystallization.HOPE THIS HELPS YOU!!DONT FORGET TO MARK THIS BRAINLIEST OR RATING IT.

50666.

CO2 does not show its pure rotational spectrum but does show rotation vibration spectrum. give reason?​

Answer»

I don't KNOW FRIEND.......

50667.

State modern periodic law ​

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emical properties of ELEMENTS are a periodic function of their atomic NUMBERS”. Mark as BRAINLIEST

50668.

IUPAC name of CH3CH2COCH2COCH3​

Answer» EXPLANATION:Pentane-2,4-dionethank you :)
50669.

Explain the effects of acid rain on Taj Mahal​

Answer»

Acid rain is caused by emissions of sulfur dioxide and NITROGEN oxide, which REACT with the water molecules in the atmosphere to produce acids. Acid rain corrodes the marble (calcium carbonate) of Taj Mahal. It causes DAMAGE to this wonderful structure, causing YELLOWING of marble. please make me as a BRAINLIST

50670.

How to identify whether it is ethanol ethanoic acid or soap solution by using the litmus paper and sodium metal .

Answer»

by litmus paperif the substance doesn't show any CHANGE on the litmus paper it is ethanolif it changes to BLU it is ethanoic ACID

50671.

10. The total number of Tt-electrons of acetylene in 5.6 litre (at STP) of gas.1) 24 x 10232)06 x 1023 3) 16 x 10234) 12 x 1023​

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Innovation is the process of turning a NEW concept into commercial success or widespread use.Invention is the creation of a new idea or concept.Creativity is the ACT of turning new and imaginative ideas into reality.Creativity, invention, and innovation are all interrelated and necessary for growth to occur. We can follow any successful COMPANY and see an investment of time and effort into these three CONCEPTS. Based on our experience and research conducted, we have DISCOVERED these insights:

50672.

60. The maximum number of isomeric ether with the molecular formula C4 H10 0 is(1) 2(2) 3(3) 4(4) 5​

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The maximum NUMBER of isomeric ETHER with teh MOLECULER formula C4H10 is:-2)3

50673.

Kinematics energy of photoelectrons is independent on dash of incident radiation​

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fahsgahghayghdfggfrExplanation:gwteythyhwr

50674.

Chemical formula of nitride​

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N3-is the FORMULA of NITRIDE

50675.

How to identify the arise of Co2 and H2 gas​

Answer»

H2 PRODUCES a pop up SOUND when a MATCHSTICK is BROUGHT over the coantainer

50676.

Chemical formula of calcium zinc oxide​

Answer» ZNO is ZINC oxidecao is CALCIUM OXIDE.
50677.

What is the chemical formation of corona virus​

Answer»

s no. CHEMICAL FORMULA of CORONA VIRUS because it is a virus and not a chemical.

50678.

The energy of an electron moving in the n orbit of an element is given by En =13.6; z2/n2 even per atom. what will be the graph of E verses z2?​

Answer» TION:this is the GRAPH of E VS z^2.hope it was HELPFUL
50679.

Q.28. In three moles of ethane (CH), calculate: (1) Number of moles of carbon atoms(i) Number of moles of Hydrogen atoms(iii) Number of molecules of ethane​

Answer»

(i) 1 MOLE of C2H6 CONTAINS 2 moles of Carbon atoms∴ 3 moles of of C2H6 will CONTAIN 6 moles of Carbon atoms(ii) 1 mole of C2H6 contains 6 moles of Hydrogen atoms∴ 3 moles of of C2H6 will contain 18 moles of Hydrogen atoms(iii) 1 mole of C2H6 contains Avogadro’s no. 6.02×1023 molecules∴ 3 moles of of C2H6 will contain ethane molecule = 3×6.02 ×1023= 18.06 ×1023 molecules.Explanation:Mark as brain list pls because of I WANT to go on vitrous pls

50680.

Pls answer question no 19

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it is electrovalent bond. Explanation:because Cu is a metal and SO4 is a covalent bond. OH combining it forms electrovalent bond of IONIC bond

50681.

Pls answer question no 18

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Na2SO4the ANSWER is 220.25please MARK it as a BRAINLIEST answer

50682.

Pls answer question no 17

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its chemical DISPLACEMENT reaction and its BALANCED too.its COPPER oxide+copper SULPHATE → copper + sulphoxide

50683.

deuterium atom in the ground state is radiated by a photon of energy 12.8eV . what will be the energy of induced radiati...​

Answer» WOW udupdyoxykx gxyzix8 dhzg K KG
50684.

which of the following is dynamic isomerism (a) cis_trans (b) optical isomerism (c) Tautomerism (d) functional isomerism ​

Answer» C) TAUTAMERISM EXPLANATION:
50685.

(24 nater inflow and culto 3. Farming porcctions to improve dates conse, vattenmphement to WALTAActSteps to improve wic.effect to imphement​

Answer»

the question is not clear..PLEASE explain it in a USEFUL MANNER Explanation:

50686.

Question 5 (a)Differentiate between the following:Hard water and Soft waterfii) Efflorescence and Deliquescencefür Exothermic reaction and Endothermic reaction(b)Give an equation for the formation of ozone in the atmosphere.(ii) What is the function of ozone layer in the atmosphere?​

Answer» TION:(1) hard WATER is acidic and soft water is basic (2) o2+o - O3 ozone
50687.

Natural gas burns in air to form CO2 and H2O

Answer»

Solved: Natural GAS Burns In AIR To Form CARBON DIOXIDE An ... Question: Natural Gas Burns In Air To Form Carbon Dioxide And Water, Releasing Heat. CH4(g)+O2(g)→CO2(g)+H2O(g) ΔHorxn = -802.3 KJ Part A What Minimum Mass Of CH4 Is REQUIRED To Heat 35.0g Of Water By 21.0∘C? (Assume 100% Heating Efficiency.)

50688.

What are the uses of tritium

Answer» TION:
50689.

The total pressure of a gaseous mixture of 2.8 g N2, 3.2 g O2and 0.5 g H2 is 4.5 atm. Calculate the partial pressure of each gas.A) P 1.00 atm; P :1.00 atm; P 2.5 atmB) P 1.00 atm; P 200 atm; P 3.5 atm©) Prz 2.00 atm; Poz:1.50 atm; Pre: 2.5 atmD) P. 1.00 atm; P. :1.00 atm: P - 3.5 atm​

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case, the TOTAL number of MOLES will bentotal=0.75+0.30+0.15=1.2 molesThis means that you havePN2=(0.75moles)/(1.2moles)×1.56 atm=0.98 atmPO2=(0.30moles)/(1.2moles)×1.56 atm=0.39 atmPCO2=(0.15moles)/(1.2moles)×1.56 atm=0.20 atmThe values don';t add up to GIVE 1.56 atm because they must be rounded to two sig figs, the number of sig figs you have for the moles of each gas.hope this HELPS you please mark the answer as brainlest please please follow me

50690.

Give reason table salt becomes wet and sticky during rainy season.​

Answer» TION:Table salt BECOMES wet because it absorbs liquid water and water vapour present in the air and it's hygroscopic in nature. it absorbs MOISTURE from the atmosphere which contains HIGH humidity in rainy SEASON.
50691.

Give reason for each noble do not form compounds readily​

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I don't KNOW FRIEND.......................

50692.

Explain about IUPAC​

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tional Union of PURE and APPLIED ChemistryIUPAC Definition: IUPAC is an acronym for International Union of Pure and Applied Chemistry. The IUPAC is the recognized authority for chemical STANDARDS of nomenclature, measurements, and atomic mass values, SETTING the standards of atomic weights that appear on the periodic tableThe International Union of Pure and Applied Chemistry (IUPAC) is an international, non-governmental organization whose PURPOSE is to address many global issues involving the chemical sciences.

50693.

Boiling point of alcohlol​

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The BOILING POINT of ALCOHOL is 78.37C

50694.

How to draw saw horse formula for alkane having three carbons.​

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tion:Chemical structure of methane, the simplest alkaneChemical structure of methane, the simplest alkaneIn organic chemistry, an alkane, or paraffin (a historical name that also has other meanings), is an acyclic SATURATED hydrocarbon. In other words, an alkane consists of hydrogen and carbon atoms arranged in a TREE structure in which all the carbon–carbon bonds are single.[1] Alkanes have the general chemical formula CnH2n+2. The alkanes range in complexity from the simplest case of methane (CH4), where n = 1 (sometimes called the parent molecule), to arbitrarily large and complex molecules, like pentacontane (C50H102) or 6-ethyl-2-methyl-5-(1-methylethyl) octane, an isomer of tetradecane (C14H30).Chemical structure of methane, the simplest alkaneIn organic chemistry, an alkane, or paraffin (a historical name that also has other meanings), is an acyclic saturated hydrocarbon. In other words, an alkane consists of hydrogen and carbon atoms arranged in a tree structure in which all the carbon–carbon bonds are single.[1] Alkanes have the general chemical formula CnH2n+2. The alkanes range in complexity from the simplest case of methane (CH4), where n = 1 (sometimes called the parent molecule), to arbitrarily large and complex molecules, like pentacontane (C50H102) or 6-ethyl-2-methyl-5-(1-methylethyl) octane, an isomer of tetradecane (C14H30).IUPAC defines alkanes as "acyclic branched or UNBRANCHED hydrocarbons having the general formula CnH2n+2, and therefore consisting entirely of hydrogen atoms and saturated carbon atoms". However, some sources use the term to denote any saturated hydrocarbon, including those that are either monocyclic (i.e. the cycloalkanes) or polycyclic,[2] despite their having a different general formula (i.e. cycloalkanes are CnH2n).Chemical structure of methane, the simplest alkaneIn organic chemistry, an alkane, or paraffin (a historical name that also has other meanings), is an acyclic saturated hydrocarbon. In other words, an alkane consists of hydrogen and carbon atoms arranged in a tree structure in which all the carbon–carbon bonds are single.[1] Alkanes have the general chemical formula CnH2n+2. The alkanes range in complexity from the simplest case of methane (CH4), where n = 1 (sometimes called the parent molecule), to arbitrarily large and complex molecules, like pentacontane (C50H102) or 6-ethyl-2-methyl-5-(1-methylethyl) octane, an isomer of tetradecane (C14H30).IUPAC defines alkanes as "acyclic branched or unbranched hydrocarbons having the general formula CnH2n+2, and therefore consisting entirely of hydrogen atoms and saturated carbon atoms". However, some sources use the term to denote any saturated hydrocarbon, including those that are either monocyclic (i.e. the cycloalkanes) or polycyclic,[2] despite their having a different general formula (i.e. cycloalkanes are CnH2n).In an alkane, each carbon atom is sp3-hybridized with 4 sigma bonds (either C–C or C–H), and each hydrogen atom is joined to one of the carbon atoms (in a C–H bond). The longest series of linked carbon atoms in a molecule is known as its carbon skeleton or carbon backbone. The number of carbon atoms may be CONSIDERED as the size of the alkane.

50695.

What are the side effects of soft water.

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which was in your area for you can find all THREADS by me EFFECT of this communication including attachments may INCLUDE confidentialExplanation:shirdi a bit to do the needful at LEAST a couple of days to do.

50696.

A- hydrolysis of an ester follows firsr order kinetics R- concentration of water remains nearly constant during the course of reaction A- if both are correct B if both are correct but r is not the reason C a is correct but r is wrong D a is wrong but r is correct

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The reaction that is the hydrolysis of ester happens to be psuedo first order reaction and not an ABSOLUTE one just because the CONCENTRATION of water which is present as solvent liquid does not change considerably throughout the COURSE of the reaction and hence it can be said that this hydrolysis reaction is a first order Reaction.So correct answer is OPTION (A), that is both the statement and it's given reason are correct i.e the given reason happens to be the correct EXPLANATION too.Hope this helps you !

50697.

In the space station, liquid ammonia is used to transfer heat. If 100 g of liquid ammonia evaporates, then how much heat was removed? (ΔHv=5.65  kJ/mol)

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Methanol (CH3OH) has a heat of fusion of 3.16 kJ/mol. Which of the ... to transfer heat. If 100 g of LIQUID ammonia evaporates, then how much heat was removed? (ΔHv = 5.65 kJ ...

50698.

Solve it please.......................

Answer» ANSWER is 2 . .........
50699.

Calculate the volume which 4.00 L of a gas at 0° C will occupy at 100° C and the same pressure

Answer»

Explanation:If you treat it as an ideal gas, then PV=nRT where P is pressure, V is volume, N is number of moles, R is the gas CONSTANT and T is temperature in K.If you ASSUME pressure is constant, and we know that the amount of substance will remain constant, and of course the gas constant is a constant, then V varies DIRECTLY with T . So for the two temperatures you can say:V1.T1=V2.T2 V2=V1.T1T2 T2 , the higher of the two temperatures, will be 273 K and T1 will be 20 degrees lower, so 253 K.Now plug in the numbers:V2=3.253273=2.78 litres

50700.

Is Hg2Cl2 empirical formula

Answer»

here is the ANSWEREXPLANATION:HG2CL2, is TWICE the EMPIRICAL FORMULA.