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I mole has 6.02 × 10²³ molecules having total mass = 28g

so, 1 molecules will have mass = 28/(6.02) × 10_²³ = 4.65×10-²³ gm

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we know that ,m=8g ,molar mass of s8 =32×8 =256g so,we got m=8g ,M=256g. now,N=?,n=?,No=6.022×1

sorry went mistakely

1Gram atom means 1 mole

No. Of moles = Weight in gram/Molar mass

No. Of moles =8/32

=1/4moles

.25 gram atom (Moles)of sulphur is there in 8 gm of sulphur

1 gram atoms = mass of 1 moles

so, mass of 1.5 moles of Ca is

= 1.5*40 = 60 gm.

Use P1V1/ T1= P2V2/ T2Very important : Before using this formula, make sure Temperature is in Kelvin.To convert °C to Kelvin, add 273 to it.

So, T1= -73°C = 200 KAlso, T2 = 27°C = 300 KSo, we have,P1 = 380 mm. P2 = 570 mmV1 = 84 ml. V2 = ?T1 = 200 K. T2 = 300 K

As, P1V1/ T1= P2V2/ T2=> V2 = P1V1T2 / ( P2T1)

PV=nRTPV=(m/M)RTPM=dRT

P:Pressurem:mass of the gasM:Molecular Massd:DensityR:Universal Gas ConstantT:Temperature.

P=380 mm= 0.5 atm=50662.5T=276 Kd=3g/l=3 kg/m3

M=dRT/PM=0.06793 kg1.23 M=.08492 kg=84.92 gm

Answer is 5KG AND 8.17 Newton

mass will remain same and weight =1/6 *49 = 8.166(approx)

we know the relation as PV = nRT where n = no. of moles = (total mass)/(molecular weight ) = m/M

but here M = 1 gm , so n = m

so PV = mRT therefore PV/T = mR.

value in calories Pls

If one mole of carbon atoms weighs 12 grams, what is the mass(in grams)of 1 atom of carbon?the molecular mass of carbon atom= 12gan atom of the carbon mass= 12g1 atom of the carbon mass=

12/6.022×10²³g= 1.99×10-²³g

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The Atomic mass = 31so, no..of proton = 31-16 = 15 , now in neutral atom no. of P = no. of e- but since it has -3 charge so, no. of e- = 15+3 = 18

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effective charge is Z - e , where Z = 21 ignore the 4s electron as it is ahead of 3d

and e is. 0*0.35 ( for 0 d electrons beside the 1 that we are calculating ) + 1*18 ( other 18 electron at the back)

so, e = 18

and Z-e = 21-18 =3

A balanced chemical equation always follow the law of mass of conservationas it cant be created nor be destroyed.

c is the right answer bhaiyya jii

option c is the right answer

c is the right answer

option c is correct answer

thanks

when magnesium ribbon is expose to air it forms a thick coating of magnesium oxide which prevents the burning. So to get pure magnesium it is cleaned with sandpaper before burning.

Respirationisconsideredasexothermic reactionbecause energy is released in thisprocess.

Glucose combines with oxygen present in our cells to form carbon dioxide and water along with energy.

Respirationis consideredasexothermic reactionbecause energy is produced during thisprocess.

Form the electronic configuration and the electrons are left in the last is your valency chlorine = at. no.=17.then electronic configuration is 2,8,7. so valency is -1.sulphur=16 .then electronic configuration is 2,8,6. so valency is -2.magnesium=12. then el.conf. is 2,8,2. so valency is +2.

A.L. Lavoisier proposedcarbonin 1789 from the Latin carbo meaning "charcoal

A fuel withlowest ignition temperature meansit catches fire more quickly andiscalled highly inflammable.Kerosene has lower ignition temperaturewhen compared todiesel. Thismeans kerosene willstart to catch fire faster than diesel

1.As we move down the alkali metal group, the electropositive character increases. This causes an increase in the stability of alkali carbonates. However, lithium carbonate is not so stable to heat. This is because lithium carbonate is covalent. Lithium ion, being very small in size, polarizes a large carbonate ion, leading to the formation of more stable lithium oxide.

∆Li2CO3--------->LiO2+ CO2

Therefore, lithium carbonate decomposes at a low temperature while a stable sodium carbonate decomposes at a high temperature.

2.

20.85℅ is right answer

this correct answer (A)

B) is correct answer

(i)The substance ‘X’ which is used in white washing is calcium oxide or quick lime and its formula is CaO.(i)The reaction involved is

concentration of solution =mass of solute/mass of solution(water) multiply by 100= (25/100)*100= 25 %

Concentration of solution = 25%

In DNA and RNA, the phosphodiester bond is the linkage between the 3' carbon atom of one sugar molecule and the 5' carbon atom of another, deoxyribose in DNA and ribose in RNA. Strong covalent bonds form between the phosphate group and two 5-carbon ring carbohydrates (pentoses) over two ester bonds.

accourding to Broglie relation wavelength=h/mvso, wavelength of cricket ball=(6.626×10^-34)/.1×50I hope you understand

wavelength=h/mv (100)/50=2

Option (4) is correct.

Naturally producedhalogenatedcompounds are ubiquitous across all domains of life where they perform a multitude of biological functions and adopt a diversity of chemical structures. Accordingly, a diverse collection of enzyme catalysts to install and removehalogensfrom organic scaffolds has evolved in nature. Accounting for the different chemical properties of the fourhalogenatoms (fluorine, chlorine, bromine, and iodine) and the diversity and chemical reactivity of their organic substrates, enzymes performing biosynthetic and degradativehalogenationchemistry utilize numerous mechanistic strategies involving oxidation, reduction, and substitution. Biosynthetichalogenationreactionsrange from simple aromatic substitutions to stereoselective C-H functionalizations on remote carbon centers and can initiate the formation of simple to complex ring structures. Dehalogenating enzymes, on the other hand, are best known for removinghalogenatoms from man-made organohalogens, yet also function naturally, albeit rarely, in metabolic pathways. This review details the scope and mechanism of nature'shalogenationand dehalogenation enzymatic strategies, highlights gaps in our understanding, and posits where new advances in the field might arise in the near future.

Diborane structure has four terminal and two bridging hydrogen atoms. The simple Boron Hydride is Diborane B2H6. The structure can be explained as, electrons are required for the formation of conventional covalent bond structure, whereas in Diborane there are only 12 valence electrons, three from each Boron atoms. Thus B2H6 is an electron deficient component.

The four terminal hydrogen atoms and two boron atoms lie on one plane. Above and below this plane, there are two bridging hydrogen atoms. Each Boron atom forms four bonds eventhough it has only three electrons. The terminal B-H bonds are regular bonds but the bridge B-H bonds are different. Each bridge hydrogen is bonded to the two boron atoms only by sharing of two electrons. Such covalent bond is called three centre electron pair bond or a multicentre bond or banana bond.

c) is the right answer of the following

ca is right answer of the following

option c is the correct andwer

(c). Ca :- CalciumCalcium is the right answer.

Answer:- (c). Ca

c calcium is the right answer

calcium is the right answer

mg is the correct answer

option (e)is the correct answer

option C is the correct answer.

option C is the correct answer

I don't understand that question

An ion is an atom or group of atoms in which the number of electrons is not equal to the number of protons, giving it a net positive or negative electrical charge. Ananionis an ion that is negatively charged, and is attracted to the anode (positive electrode) in electrolysis. Acationhas a net positive charge, and is attracted to the cathode (negative electrode) during electrolysis.

positivecharge is on caption.

positivecharge are calledcations.

Hence, option (A) is correct

Its reimer temer reaction so Option 2 is rightit will create free radical of ccl2

Option B

2 is right choice chcl3 + NaoH first react to carbene generate it is a electronphile