Messages posted by Kira

o.O how?

if geeta's 62, then next year she wud be 63 and sunita - 33.

according to the question, next yr, geeta wud be 3 times sunita's age 11 years bak.

63 is not equal to 3*(33-11)

no. of moles of N₂= 7/28 = 1/4

no. of moles of CO₂= 11/44 = 1/4

total no. of moles = 1/2

PV = nRT

1(V) = 1/2 * 0.0821 * 290 = 11.9 L

density = mass/volume = 18/11.9 = 1.512 gm/L

umm.. is the answer 1.512 gm/litre?

five point someone! :P

or electron deficient species like BF₃

electrophiles r electron seeking species. they accept electrons, so they r usually positively or partially positive charged.

geeta's 59, sunita's 30 :D

err, since BF₃is a Lewis acid and NH₃is a Lewis base, NH₃donates its lone pair to BH₃and forms a dipolar bond.

NH₃gets a positive formal charge and BH₃ gets a negative formal charge. an "adduct" is formed.

1. 3BaCl₂ + 2Na₂PO₄---> Ba₃(PO₄)₂+ 6NaCl

1 mole 0.4 mole

here, Na₂PO₄is the limiting reagent. So,

3BaCl₂+ 2Na₂PO₄---> Ba₃(PO₄)₂ + 6NaCl

0.6 mole 0.4 mole 0.2 mole

therefore, no. of moles of Ba₃(PO₄)₂is 0.2

2. 3MnO₂----> Mn₃O₄+ O₂

No. of Moles of MnO₂= 10/87

=> no. of moles on Mn₃O₄= 10/261

Weight = molar mass * no. of moles = 229 *10/261 = 8.77g

3. No. of moles of Phosphorus = 3.1/31 = 0.1

in Ca₂(PO₄)₂, for 2 moles of P, there are 3 moles of Ca.

thus, for 0.1 moles of P, there is (0.1*3/2) = 0.15 moles of Ca.

therefore, Weight of Ca = no. of moles * atomic wt = 0.15 * 60 = 6g

no pic! 0.0000000000000000000000000000000000000000000001i'm too nice to give a zero!

whoa... ur pic is really creepy at the first sight!

ummmm.... if u cant access ur account... how did u post a question?? lol

its not that i hate social....

i just dont like it!!!

cute!!

9.5!

Wall

wow, i return to goiit after ages, and i am amazed to see that this thread is still continuing!!

but anyways, 8 to u too!

at a basic lvl, u can figure out heights of towers and distances!

wat are fractals? if it is self-similarity, is the eiffel tower built on the concept of fractals?

Also, can the Prisoner's Dilemma be expressed as a dynamical fractal? if yes, how?

@ INR 5,443/-