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Acarbocationforms bonds with three other groups and is positively charged. With three bond pairs and zero lone pairs it has trigonal planar geometry by VSEPR theory, and trigonal planar is characteristic ofsp2 hybridisation. ... Therefore, it needs 3hybridisedorbitals, so it issp2 hybridised.

Acarbocationforms bonds with three other groups and is positively charged. With three bond pairs and zero lone pairs it has trigonal planar geometry by VSEPR theory, and trigonal planar is characteristic ofsp2 hybridisation. ... Therefore, it needs 3hybridisedorbitals, so it issp2 hybridised.

Carbon forms large no. of compounds as it has the following 3 properties,1. It has a valency of 4 so can make bonds with large no. of atoms.2. It has a small nucleus as it has only 6 protons and 6 neutrons and hence attract more electrons easily.3. And last is the most important property of carbon that is catenation which means it has the capability to form large no. of bonds.

Always remember one formula

t½ ∞ 1/(a)ⁿ-¹, where n is the order of the reaction.

now here t½ = 1/ka¹

so n-1 = 1 => n= 2 order is 2

option d

H3PO2. and H3PO3

Liebig condensersare a simplecondenserdesign used to cool and condense hot vapor as part of a distilling apparatus. This 300 mmcondenserhas a straight inner tube that thecondensingvapor passes through and a large outer jacket that cooling water passes through.

Liebig condenser is used for condensing of vapours that pass trough the centre tube. It is cooled withwaterthat passes in the outer tube (shell around the centre tube) in the opposite direction than the one of hot vapour.

Please refer to this similar solution!!

but I want to check my answers for my question. For me it's coming 510 . pls check whether my answer is correct or wrong

Yes the answer is 510

= 6.8 (100-25)

= 6.8 (75)

= 510 J

thank you

Aluminum, copper and many more metal are good conductor of heat which allow the metals to be used as utensils.

2. Secondly, some the metals like aluminum are cheap and durable.

3. Utensils of different shapes can be obtained easily due to their property of deformation without losing toughness.Metals are generally good conductors of heat. Hence aluminium, copper, and silver are good conductors of heat. That's why copper and aluminium are generally used for making vessels just because of this reason.

thanks jaggi bro

1. Thecompoundis the chemical combination of elements, bonded together in specific proportion. Themixtureis the physical combination of substances, bonded together in any proportion. While thecompoundis a pure substance, themixtureis an impure substance.

thanks

Distillation is the process of separating the components or substances from a liquid mixture by using selective boiling and condensation.

separation of a liquid mixture into fractions differing in boiling point (and hence chemical composition) by means of distillation, typically using a fractionating column.

Chemistry is known as experimental science because this subject if full of chemical reactions which are related to daily life situations and many experimental laws.

Chemistry is known as experimental science because this subject if full of chemical reactions which are related to daily life situations and many experimental laws.

chemistry is known as experimental science as an experiment is performed under controlled condition in an actively are observe a natural or an artificially created phenomenon glass is transparent material we can see through it clearly it does not react with most of the chemical used in experiments purex glass or borocil glass is a special type of glass which hardly expands heating

1. Chemistry is known as experimental science as an experiment is performed under controlled conditions in an activity and we observe a natural or an artificially created phenomenon.2.1. glass is easy to clean. 2. Glass is transparent material and we can see through it clearly. 3. It does not react with most of the chemicals used in experiments. 4. Glass withstands high temperatures. 5. Pyrex glass or borosil glass is a special type of glass which hardly expands on heating. Such glasses do not break even at high temperatures.

for first order reactiont = 2.303 / K (Log a / a-x)Let a = 100initially reaction is 15% completed, so x = 15 , t = 20 mn.so, 20 = 2.303 / K ( log 100 / 100-15 ) K = 2.303 / 20 ( log 100 / 85 ) K = 2.303 / 20 (log 1.176 ) K = 2.303 / 20 ( 0.706 ) K = 0.11515 (0.706 ) K = 0.00813now reaction is 20% completedso, t = 2.303 / K (log a / a-x ) t = 2.303 / 0.00813 ( log 100 / 100-20 ) ( putting value of K ) t = 283.27 ( log 100 / 80) t = 27.45 min.

please solve step by step in last when putting value of K

Thanks

Inner transition metals.

Rabi crop For ex peas,gram

In methane there are only 2 elements, Carbon and Hydrogen.

The total mass of a methane molecule (CH4) is 14 x 1 + 12 = 16.

%mass of H in methane= 4/16 x 100% = 25%%mass of C in methane = 12/16 x 100% = 75%

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sir

C+O2---CO2

Molecular wt.of carbon —12g

Here

12g of carbon gives 44g of CO2

2 C2H6 + 7 O2 --->4 CO2 +6 H2O

ethane rqd = 2volumeoxygen rqd = 7 volumetherefore for 600 cc of ethanevolume of oxygen rqd = 300 x 7 cc = 2100 ccvolume of carbon dioxide formed will be = 4 volume = 4 x 300 cc = 1200 ccvolume of unused oxygen left = 2500 - 2100 =400 cc

If the carbon-dioxide percentage increases it will cause a greenhouse effect, i.e. the carbon dioxide present in our atmosphere will not allow the hot rays of sun to escape back into space from the atmosphere after reflection.

If the carbon-dioxide percentage increases it will cause a greenhouse effect, i.e. the carbon dioxide present in our atmosphere will not allow the hot rays of sun to escape back into space from the atmosphere after reflection.

If the carbon-dioxide percentage increases it will cause a greenhouse effect, i.e. the carbon dioxide present in our atmosphere will not allow the hot rays of sun to escape back into space from the atmosphere after reflection.

I don't think so

Heme group consists ofprotoporphyrinorganic component and an iron atom located in its center. The heme group gives muscle and blood their distinctive red color.

Carbonic anhydrase (CA; carbonate hydro-lyase, EC 4.2.1.1) is a zinc-containing enzyme thatcatalyzesthe reversible hydration of carbon dioxide:

h2o2 is formed.......like here

H2O2 is formed when CO2 is bubbled through a solution of barium peroxide in water ...... plzzz like here

1)Carbon dioxide(CO2)turns lime water milky due tothe formation of insoluble calcium carbonate, CaCO3. Sulphur dioxide (SO2) also does the same, but slowly, as it reacts withcalcium hydroxideto form insoluble calcium sulphite.

2) (12) + 2(16) = 44

4)Dry ice is frozencarbondioxide. A block of dry ice has a surface temperature of -109.3 degrees Fahrenheit (-78.5 degrees C). Dry ice also has the very nice feature of sublimation -- as it breaks down, it turns directly intocarbondioxide gas rather than a liquid.

Metals react with water to form metal hydroxide and hydrogen gas, but when metals react with steam, they form metal oxide and hydrogen.

it will appear in the infrared region

Cp - Cv = RThis is a standard relation for one mole. For two moles the difference will be = 2 R.

In general Cp - Cv = n R ---- (0)============We know PV = n R T, V = (nR/P) * T --- (1) At constant pressure, ΔV/ΔT = nR/P --- (2)

From first law of thermodynamics, we have that ΔQ =ΔU + W =ΔU + PΔV ---- (3)We know that the internal energy U and the change in it ΔU, are entirely dependent on the temperaturefor the same amount of substance. So it does not depend on the pressure or volume.

Cp = [ ΔQ/ΔT ]_P=const = [ ΔU/ΔT ]_P=const + P * [ ΔV/ΔT ]_P=const = ΔU/ΔT + P * n R/P =ΔU/ΔT + n R

Cv = [ΔQ/ΔT ]_V=const = [ΔU/ΔT ]_V=const + P [ ΔV/ΔT ]_V=const =ΔU/ΔT + 0

Hence Cp = Cv + n R

Cp-Cv=2R

in book correct answer is c

Osmotic presuure=i∗C∗R∗T

where, C=concentration of solute(in terms of Molarity)

R= Gas constant=0.082L(atm)(mol)^−1K^−1

T=temperature (in Kelvin)

i=Van’t-Hoff factor(=1 for non-electrolyte)

10%urea solution means10gurea is present in 100ml of solution.

mole of urea=weight

given/Molecular weight of urea

=10g/60gmol^−1=1/6

Hence Concentration of urea

(in terms of Molarity)

= (moles of urea(n) /volume of solution )×1000×1000

={(1/6)/100}∗1000

5/3

Hence Osmotic pressure=1×(5/3)×0.082×300atm

=41atm

Substances like CO2 and water move in and out of the cell due to process of diffusion.

Due to the following features: (i) Chemical inertness Both form chemically inert electrodes. (ii) Adsorption capacity Platinum and palladium both have good adsorptive capacity for hydrogen.

bro mark my answer as best. efforts are mine but mind is yours

option A should be correct... it is of the order 10^-14m

and 10.3 × 10^-13cm = 1.03 × 10^-12cm = 1.03×10^-14m

खाद्य परिरक्षणखाद्यको उपचारित करने और संभालने की एक ऐसी प्रक्रिया है जिससे उसके खराब होने (गुणवत्ता, खाद्यता या पौष्टिक मूल्य में कमी) की उस प्रक्रिया को रोकता है या बहुत कम कर देता है, जो सूक्ष्म जीवाणुओं द्वारा होती या तेज कर दी जाती है। यद्दपि कुछ तरीकों में, सौम्यबैक्टीरिया, जैसेखमीरयाकवकका प्रयोग किया जाता है ताकि विशेष गुण बढ़ाए जा सके और खाद्य पदार्थों को संरक्षित किया जा सके (उदाहरण के तौर पर पनीर और शराब).पौष्टिकमूल्य, संरचना औरस्वादबनाना और उसका अनुरक्षण, खाद्य के रूप में उसके गुणों को संरक्षित रखने के लिए महत्वपूर्ण है। यह सांस्कृतिक रूप से आश्रित है क्योंकि जो एक संस्कृति के लोगों के लिए खाने योग्य है, वह दूसरी संस्कृति के लोगों के लिए नहीं भी हो सकती है।

Trigonalpyramidal: Atrigonalpyramidal molecule has a pyramid-like shape with atriangularbase. Unlike thelinearandtrigonalplanar shapes but similar to thetetrahedralorientation, pyramidal shapes require three dimensions in order to fully separate the electrons.

Given, element X has valency 3.The valency of oxide O is 2.On interchanging the valency, we get,Therefore the formula of its oxide will be X2O3.

option 2

because d orbital is only present in Phosphorus

out of all the options..

your answer is correct. Thank you.

what is dπ-pπ?

(a). Management of plants and animal

as management of plants and animals

Let the initial volume of N₂O₄ be x, and initial volume of NO₂ is 0

If the degree of dissociation is a, then final volume of N₂O₄ is x(1-a) and that of NO₂ is 2ax

N₂O₄------------------> 2NO₂

initial x 0

At equilibrium x(1-a) 2ax

Hence total initial volume = x + 0 = x

Total Final volume = x(1-a) + 2ax = x + ax = x(1+a)

It is given that the initial volume is 25% less than the final volume

=> x = 0.75* x(1+a)

=> 1+a = 1.33

=> a = 0.33

Hence the degree of dissociation will be 0.33.

this question the answer of 0.33

2.34/14= N = 0.1675.34/16 = O = 0.333

divide moles by least amount of moles

N = 0.167/.167 = 1O = 0.333/.167 = 2

this way it can be found by emperical formula.

formula will be NO2

The ethan- stem means you have two carbons, and the -oic acid ending means that the carbon on the end is part of a carboxylic acid group, -COOH. So ethanoic acid is CH3COOH, which is more commonly known as acetic acid.

Anhydrous (water-free) acetic acid is sometimes calledglacialacetic acid because it solidifies just below room temperature, at 16.7°C. Acetic acid can be concentrated by dripping the impure compound over a "stalactite" of glacial (frozen) acetic acid. Pure acetic acid crystallizes, while impurities run off in the liquid.