Recently Active Chemistry Questions

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Which of the following statement is wrong? a) the IUPAC name of alkenes ends with suffix –ene b) the IUPAC name of alkynes ends with suffix –yne c) the substituents gets lower number in comparison to functional group d) t ...

An element crystallizes into a structure which may be described by a cubic type of unit cell having one atom in each corner of the cube and two atoms on one of its face diagonals. If the volume of this unit cell is 24 x 10-24 ...

Give reasons why equal volumes of nitrogen and ozone under same conditions of temperature and pressure have different number of atoms. ...

Assuming that Hund's Rule is violated, the bond order and magnetic nature of the diatomic molecule B2 is a.1 and diamagnetic b.0 and diamagnetic c.1 and paramagnetic d.0 and paramagnetic ...

Why is cyclopropane forming from an alkene in Simmons Smith reaction? Isn't dat increasing d strain...i mean isn't d product more unstable dan d reactant???? Heres wat i got for d reaction mechanism... *Image* ...

What is the mechanism of the reaction- Na+C- *Image* C-Na++2CO2→Na+O-OCC *Image* CCOO-Na+ ...

2)0.001 g of C is required to write a letter with a graphite pencil. The total number of C atoms used in writing the letter is 5 x 1012 5 x 1019 5 x 1024 1 x 1020 Your Answer Not Attempted Correct Answer b please show me the ...

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which of the species has the maximum number of lone pair of electrons on the central atom a) [ClO3]- b) XeF4 c) SF4 d) [I3] ...

If 1021 molecules are removed from 200 mg of CO2 then the number of moles of CO2 left is 2.88 x 10-3 1.66 x 10-3 4.54 x 10-3 1.66 x 10-2 Your Answer Not Attempted Correct Answer a please show me the calculation. ...

If the slope " Z (compressibility factor) vs " P " curve is constant ( Slope = π 492.6 atm-1) at a particular temperature (300 K) and very high pressure, then calculate the diameter if the molecules? ...

At 298K, the thermal expansion coefficient and the Isothermal compressibility of liquid water are and respectively. Then, for water at 300 K and P = 1.00 bar is : a) 1.5 * 10^4 bar b) 3 * 10^-4 bar c) 6 * 10^-4 bar d) 9 * 10^ ...

How many isomers of will be primary alcohols a) 2 b) 3 c) 4 d) 5 ...

The Hybridisation of Carbon atoms in C-C single bond of HC≡C-CH≡CH2 is a)sp3-sp3 b)sp2-sp3 c)sp-sp2 d)sp3-sp ...

Why is Pb+2 kept in both Gr1 and Gr2? ...

If x,y and z are electronegativity,ionisation potential and electron affinity respectively.Then the electron affinity(z) in the terms of electronegativity(x) and ionisation potential(y) will be A.z=x+y/2 B.z=x-y/2 C.z=[(x)^2+ ...

3)Which of the following statement is wrong? a the IUPAC name of alkenes ends with suffix –ene b the IUPAC name of alkynes ends with suffix –yne c the substituents gets lower number in comparison to functional group d the ...

The number of nearest Cl- ions present around a Cs+ ions in CsCl crystal is__6__8__12__4 ...

The numbers of tetrahedral and octahedral voids respectively present in closest packed crystals containing ‘X’ number of spheres are__2X and X__X and 2X__4X and 2X__4X and X ...

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A2 and B2 are two diatomic molecules with bond energies of A-A and B-B bonds as x and y respectively.If the bond energy of the molecule A-B formed up from A2 and B2 is z.Then,the resonance energy of molecules A-B will be A.(â ...

What is thermal De-Broglie wavelength??? Please give a simple explanation. ...

From the metals Mg and Fe, select a different metal in each case- a) Does not react with dil hydrochloric acid b) Does not react with cold water but reacts with steam when heated.... This question came in my school chemistry ...

What is the process used to make ammonia? ...

My first question is how bond angle is related to pKa values of a compound....Heres d question Q1. Selected bond angles for five hydrocarbons are shown below. Arrange these hydrocarbons according to their pKa values, from low ...

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Bohr said that electrons do not lose energy when they accelarate within discrete energy levels?? Why is that?? After all, the electron is still accelarating and according to Maxwell's Electromagnetic Theory, it shoul be givin ...

http://www.chacha.com/question/is-lead-hydroxide-amphoteric claims lead hydroxide to be amphoteric. So, what prevents it from reacting with the base ammonium hydroxide? Thanx in advance... ...