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Can someone help me out.
**BECOME FAN**
**GIVE MEDALS**
Q) Can someone tell me briefly account on MOLES.
 one year ago
 one year ago
Can someone help me out. **BECOME FAN** **GIVE MEDALS** Q) Can someone tell me briefly account on MOLES.
 one year ago
 one year ago

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mayankdevnaniBest ResponseYou've already chosen the best response.1
@.Sam. @phi @cwrw238 @radar @sara12345 @sauravshakya @surdawi @hba
 one year ago

mayankdevnaniBest ResponseYou've already chosen the best response.1
@myko @amriju @Agent_Sniffles @mahmit2012 @him1618 @timo86m
 one year ago

sara12345Best ResponseYou've already chosen the best response.0
mole is just a counting number. like, dozen = 12, mole = some number
 one year ago

mayankdevnaniBest ResponseYou've already chosen the best response.1
like some examples
 one year ago

sara12345Best ResponseYou've already chosen the best response.0
thats the concept. to count small particles in relation to mass, we use moles in chemistry
 one year ago

sara12345Best ResponseYou've already chosen the best response.0
do u have any specific question
 one year ago

sara12345Best ResponseYou've already chosen the best response.0
il have to think of an example...
 one year ago

mayankdevnaniBest ResponseYou've already chosen the best response.1
no but i don't understand the formula of mole
 one year ago

sara12345Best ResponseYou've already chosen the best response.0
forget about the formula. therez no formula. mole is not a theory. its just a number, so we use the number in conversions.
 one year ago

sara12345Best ResponseYou've already chosen the best response.0
u wud be okay with mole, if u are familiar with dimensional analysis
 one year ago

mayankdevnaniBest ResponseYou've already chosen the best response.1
n(mole)=atomic weight/molar mass
 one year ago

sara12345Best ResponseYou've already chosen the best response.0
ok do u knw below two things : 1) atomic mass 2) molar mass
 one year ago

sara12345Best ResponseYou've already chosen the best response.0
could u tell me what they are
 one year ago

mayankdevnaniBest ResponseYou've already chosen the best response.1
atomic mass means the atomic mass (ma) is the mass of a specific isotope, most often expressed in unified atomic mass units
 one year ago

mayankdevnaniBest ResponseYou've already chosen the best response.1
the molar mass M is a physical property. It is defined as the mass of a given substance
 one year ago

mayankdevnaniBest ResponseYou've already chosen the best response.1
right @sara12345
 one year ago

sara12345Best ResponseYou've already chosen the best response.0
in periodic table, the mass of each element is shown in unit amu, relative to carbon right ?
 one year ago

sara12345Best ResponseYou've already chosen the best response.0
dw:1351767227333:dw
 one year ago

sara12345Best ResponseYou've already chosen the best response.0
N has a mass of 14 amu, Also, if u take one mole of N atoms, they would weigh 14 grams.
 one year ago

sara12345Best ResponseYou've already chosen the best response.0
thats the relation between 'mole and grams'
 one year ago

mykoBest ResponseYou've already chosen the best response.0
mol is just a number 6.02214179×10^23
 one year ago

amrijuBest ResponseYou've already chosen the best response.1
u need to know whats a mole rite....well...in a part of chemistry called physical chemistry...u need to calculate mass volume etc of chemical substances....for that....to measure the number of molecules atoms etc of the compound in a given sample...we use the term moles....it gives us the number of atoms or molecules..in the given amount of specimen....it accualy is 6.023* \[10^{23}\] units....just as a dozen means 12 units...so one mole of money means...6.023*10^23 rupess...
 one year ago

sara12345Best ResponseYou've already chosen the best response.0
so u can use the ratio \(\frac{1 mol}{atomic\ mass}\) in your conversions
 one year ago

sara12345Best ResponseYou've already chosen the best response.0
to converst between \(mol \) and \(grams\)
 one year ago

mayankdevnaniBest ResponseYou've already chosen the best response.1
what is the formula of mole
 one year ago

sirm3dBest ResponseYou've already chosen the best response.0
a mole describes a fixed number of similar atoms or molecules a dozen means 12, a mole of nitrogen gas means 6.022x10^23 molecules of nitrogen gas
 one year ago

mayankdevnaniBest ResponseYou've already chosen the best response.1
yaa i know but what's the formula of mole
 one year ago

amrijuBest ResponseYou've already chosen the best response.1
now the mole is very special....since all that atomic weight u see is the weight of one mole of an atom in grams....same for moleclar wt.....also....for any gas..one mole of the gas occupies a volume of 22.4 litres at STP....so now u know that moles=Mass of the given specimen/ mol or atomic masss ( accordingly if its a molecule or an atom that the specimen is made of)
 one year ago

mayankdevnaniBest ResponseYou've already chosen the best response.1
no how can we derive it
 one year ago

mayankdevnaniBest ResponseYou've already chosen the best response.1
yaa thats what i have
 one year ago

mayankdevnaniBest ResponseYou've already chosen the best response.1
@amriju can you give me examples of mole
 one year ago

sara12345Best ResponseYou've already chosen the best response.0
lets work out the example/question u had asked before, whats that ?
 one year ago

amrijuBest ResponseYou've already chosen the best response.1
lets say u have 200 grams of NaCl...can u find out the number of moles..?
 one year ago

sara12345Best ResponseYou've already chosen the best response.0
lets not go to the compound level in the starting itself
 one year ago

sara12345Best ResponseYou've already chosen the best response.0
lets take an example which involves element only
 one year ago

mayankdevnaniBest ResponseYou've already chosen the best response.1
Na=23g and Cl=35.5g
 one year ago

amrijuBest ResponseYou've already chosen the best response.1
correct.....so NaCl has a molecular mass of.?
 one year ago

sara12345Best ResponseYou've already chosen the best response.0
ok great u seem to be having some idea of things already :)
 one year ago

mayankdevnaniBest ResponseYou've already chosen the best response.1
another some dificult
 one year ago

amrijuBest ResponseYou've already chosen the best response.1
now find the number of moles of sodium ions in it....
 one year ago

mayankdevnaniBest ResponseYou've already chosen the best response.1
not so much difficult
 one year ago

amrijuBest ResponseYou've already chosen the best response.1
ok...so wats the answer..?
 one year ago

amrijuBest ResponseYou've already chosen the best response.1
thats the weight of Na+...i want the numbr of moles of it
 one year ago

mayankdevnaniBest ResponseYou've already chosen the best response.1
sorry.. i don't know
 one year ago

sara12345Best ResponseYou've already chosen the best response.0
did u get the question
 one year ago

sara12345Best ResponseYou've already chosen the best response.0
question is this : find number of moles of Na+ in 2000 grams of NaCl
 one year ago

mayankdevnaniBest ResponseYou've already chosen the best response.1
how can you identify question @sara12345
 one year ago

sirm3dBest ResponseYou've already chosen the best response.0
the number of moles of Na+ is the same as the number of moles of NaCl, which is 2000/58.5 moles
 one year ago

amrijuBest ResponseYou've already chosen the best response.1
ok....u found the number of moles of nacl...k?..lets hav another ques...find the number of Na+ ions in a dozen of NaCl molecules
 one year ago

amrijuBest ResponseYou've already chosen the best response.1
@mayankdevnani answer my ques...
 one year ago

mayankdevnaniBest ResponseYou've already chosen the best response.1
yaa you can @rduncan16
 one year ago

mayankdevnaniBest ResponseYou've already chosen the best response.1
i don't get answer @amriju help me!!!!
 one year ago

rduncan16Best ResponseYou've already chosen the best response.0
cuz i can give u the actuial formulia
 one year ago

amrijuBest ResponseYou've already chosen the best response.1
how many Na+ atoms r there in 1 nacl molecule....nacl=na+ +cl.....
 one year ago

mayankdevnaniBest ResponseYou've already chosen the best response.1
@amriju @sara12345
 one year ago

UnkleRhaukusBest ResponseYou've already chosen the best response.0
hmm, whats the question, something about a mole?
 one year ago

mayankdevnaniBest ResponseYou've already chosen the best response.1
how many Na+ atoms r there in 1 nacl molecule
 one year ago

UnkleRhaukusBest ResponseYou've already chosen the best response.0
the NaCl molecule has one sodium atom and one chlorine atom only
 one year ago

UnkleRhaukusBest ResponseYou've already chosen the best response.0
one mole of NaCl has 6x10^23 molecules, so in one mole of NaCl there will be 6x10^23 sodiums and 6x10^23 chlorines
 one year ago

mayankdevnaniBest ResponseYou've already chosen the best response.1
no so whats the answer
 one year ago

UnkleRhaukusBest ResponseYou've already chosen the best response.0
the H_2O molecule has two hydrogen atoms and one oxygen atom one mole of H_2O has 6x10^23 molecules, so in one mole of H_2O there will be 12x10^23 Hydrogens and 6x10^23 Oxygens
 one year ago

UnkleRhaukusBest ResponseYou've already chosen the best response.0
what was your question exactly?
 one year ago

mayankdevnaniBest ResponseYou've already chosen the best response.1
how many Na+ atoms r there in 1 nacl molecule
 one year ago

sara12345Best ResponseYou've already chosen the best response.0
friend, precicely this is the reason, i hinted u to take an example that contains only elements
 one year ago

sara12345Best ResponseYou've already chosen the best response.0
when we are studying the concept of mole, it makes no sense to deal with compounds.
 one year ago

sara12345Best ResponseYou've already chosen the best response.0
compounds wil come much later
 one year ago

sara12345Best ResponseYou've already chosen the best response.0
this is the logical order we study things in chemistry : 1) atoms models 2) compounds 3) reactions
 one year ago

sara12345Best ResponseYou've already chosen the best response.0
mol concept is very basic, we learn it along with atomic mass and molar mass, in first module, atomsmodels
 one year ago

sara12345Best ResponseYou've already chosen the best response.0
once we get confident with atoms, mole conversions to grams and number of atoms, fully, we move to next module compounds.
 one year ago

mayankdevnaniBest ResponseYou've already chosen the best response.1
sorry... meet tomorrow... thnx...for coming ....will be right back ...i tag you
 one year ago

sara12345Best ResponseYou've already chosen the best response.0
NaCl is an ionic compound, which will not make sense to u, when we r living in module 1
 one year ago

mayankdevnaniBest ResponseYou've already chosen the best response.1
ok @UnkleRhaukus @sara12345 @amriju @thivitaa
 one year ago

sara12345Best ResponseYou've already chosen the best response.0
ok, mean while try to work this simple q : whats the mass of 2.35 moles of carbon ?
 one year ago

UnkleRhaukusBest ResponseYou've already chosen the best response.0
we know 12 g of carbon is a mole
 one year ago

sara12345Best ResponseYou've already chosen the best response.0
and another example : how many moles are in 100 grams of carbon ?
 one year ago

mayankdevnaniBest ResponseYou've already chosen the best response.1
@amriju plz ask any question
 one year ago

mayankdevnaniBest ResponseYou've already chosen the best response.1
plz @amriju for practise
 one year ago

amrijuBest ResponseYou've already chosen the best response.1
i cant help u here...bring me ques..i can help...but i cant really form tough ques...:(
 one year ago

mayankdevnaniBest ResponseYou've already chosen the best response.1
no... ask any question pklzz
 one year ago

amrijuBest ResponseYou've already chosen the best response.1
k....water was poured on sulphuric acid....making the temperature of the flask around 300 degrees and causing 25 percent of acid to vaporise...if the volume of the acid in gaseous state was x cc find 1) the number of moles of acid..2) total weight of the acid before water was poured
 one year ago

amrijuBest ResponseYou've already chosen the best response.1
this is a pretty tough ques...
 one year ago

mayankdevnaniBest ResponseYou've already chosen the best response.1
yaa well try this...isme kya bura hai
 one year ago

amrijuBest ResponseYou've already chosen the best response.1
tumne charles nd boyles law kr liye ho..?
 one year ago
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