Recently Active Chemistry Questions

i hv a doubt abt the concept of gibbs energy can sm1 explain it in simple terms.... ...

1)The specific gravity of CCl4 vapour at 273K and 76 cmHg in grams/litres ? 2)A monoatomic gas, a diatomic gas and a triatomic gas are mixed, taking one mole of each, the Cp/Cv for the mixture is ? 3)One mole of an ideal mono ...

if c+o2- co2 then why the residue, (which is also carbon) is not burnt properly. whereas in the case of diamond it is burnt completely ...

what is meant by FREE CHARGE on an ion? ...

A mixture of two gases A and B in the mole ratio 2:3 is kept in a 2 litre vessel. A second 3 litre vessel has the same two gases in the mole ratio 3:5. Both gas mixtures have the same temperature and same total pressure. They ...

I have a small doubt. suppose in a reaction of A4 B3 , A gains 3 e- and B loses 2 e- then what will be the n - factor of A4 B3 in that reaction ? i.e the ratio of Mol wt and equivalent wt ? and hence wat will be its euqivalen ...

There are n containers having volumes V, 2V, ......., nV. A fixed mass of a gas is filled in all containers connected with stopcock. All containers are at the same temperature if pressure of first container is P then What is ...

*Image* Explain All e conceps , ...

why does K capture happen in some nuclides only?? i mean if at all it happens in some then it shud happen in most of the cases , a nucleus shud capture one s electron!!! what is the criteria that decides that K capture takes ...

Again i realise that chemistry is still the WORST-HIT subject in targetIIT.com (and also in my percentile bar :P) So, as an attempt to encourage NEW minds to study chemistry (which is not that boring once u start studying it) ...

well one after a LONG LONG time...first time ever in chemistry!! grossly conceptual though!! may be easy!! A DIAMOND MOLECULE IS LARGER IN SIZE THAN A CARBON ATOM...SAME FOR MANY...WELL LETS LOOK IN THE CASE OF HYDROGEN...HYD ...

powerful explosive RDX is formed during the nitration of ureotorpine glycol toulene phenol energy of activation of reaction depends on nature of the reactant temperature pressure concentration xplain plz,,,,,,,,,,, ...

hi can someone please tell me how much do we need to know about these topics mentioned in BITSAT syllabus and where to find them?? -Replication, transcription an protein synthesis, protein code -lipids , hormones , vitamins, ...

why the dipole moment of individual bond cannot be calculated in a polyatomic molecule. ...

give the mechanism of product formed when aniline reacts with concentrated HNO3 ...

Q1 in a 100ml of an aqueous hydrochloric acid of ph 1.0 , 900 ml of more distilled water is added , the ph of the resultant soln will become_______ answer: 2.0 Q2 50 litres of 0.1M HCL is thouroughly mixed wid 50 litres of 0. ...

what is the difference between atomic weight and gram atomic weight of any element??? ...

Hi, I have the following subjective doubts from atomic structure.... 1. What electronic transition in the He^{+} ion would emit the radiation of the same wavelength as that of the first Lyman transition of hydrogen (ie, for a ...

According to avogadro hypothesis: 1 mole of any gas at NTP/STP occupies a volume equal to =22.4L but according to gas theory a gas takes up the volume of any container in which it is kept ....then what is the use of avogadro' ...

when benzene sulfonic acid and p-nitrophenol are treated with NaHCO3 , the gases released respectively are give reason also- ...

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atoms may be regarded as comprising of p's,n's and e's.if the mass attributed by electrons was doubled and that by neutrons was halved d at mass of C-12 'll b? a)approx. the same b)doubled c)reduced aprrox. 25% d)approx. halv ...

WHAT mass of 60% HCl (by mass) is required to completely react with 0.2 mol of zinc.The reaction is : Zn +2HCl -> ZnCl2+H2 ...

Mixture X=0.02 moles of [Co(NH3)5SO4]Br and 0.02 moles of [Co(NH3)5Br]SO4 was prepared in 2 L of solution: 1 L of mixture X+excess of AgNO3→Y 1 L of mixture X+excess of BaCl2→Z Number of moles of Y and Z are: a)0.01,0.01 ...

Q1 Because of insufficient ignition, a supposed CaO precipitate from a 1 g sample of limestone weighed 0.4125 g and contained 5.3% of its own weight of CaCO3(ie there is CaCO3 left unignited whose amount is 5.3% of 0.4132) . ...

Q) Henry's Law constant for CO2 is 1.67* 108 Pa at 298K. Calculate the quantity of CO2 in 500mL of soda water when packed under 2.5atm CO2 pressure at 298K. (Is th answer 0.0024g??) ...

Why doesn't 1 mole of water in gaseous state fall while 1mole of water in liquid fall from same height? ...

1.Calculate the vapor pressure of 0.1M aqueous solution of non-electrolytes at 75°C. 2. Calculate the molality and molarity of a solution made by mixing equal volumes of 30% by weight of sulphuric acid(density = 1.2 gm/ml)an ...

Q→ A sample of H-atoms containing all atoms in some excited state is irradiated with light of wavelenth ∂ and atoms get reexcited to furthur higher orbit. on removing the light source , atoms de-excite to ground state wit ...

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