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Nikhil619
 one year ago
An alloy has Fe, Co , Mo in a composition of 71%, 12%, 17% respectively. How many cobalt atoms are there in a cylinder of radius 2.5 cm and length 10 cm .The density of the alloy is 8.2 g/ml.[At.wt Co=59]
Nikhil619
 one year ago
An alloy has Fe, Co , Mo in a composition of 71%, 12%, 17% respectively. How many cobalt atoms are there in a cylinder of radius 2.5 cm and length 10 cm .The density of the alloy is 8.2 g/ml.[At.wt Co=59]

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shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.3mass= density * volume density is given volume = pi r^2 h fine mass 12% of mass is the final answer use appropriate units.

Nikhil619
 one year ago
Best ResponseYou've already chosen the best response.0oh.. we should take v of cylinder as volume?

Nikhil619
 one year ago
Best ResponseYou've already chosen the best response.0and they've asked number of cobalt atoms..how is that 12% of mass?

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.3ahh okay 12% of that = mass of cobalt atoms in 1 mole of cobalt = avagadros no. atoms in given mass = ?

Nikhil619
 one year ago
Best ResponseYou've already chosen the best response.012 % of that? what is that? no.of atoms? or no.of moles?

Peter14
 one year ago
Best ResponseYou've already chosen the best response.1looks like 12% by mass

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.312% of that , that'll give mass of cobalt in the compound

Peter14
 one year ago
Best ResponseYou've already chosen the best response.1"that" is the mass of the cylinder I think

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.3that is mass of the compound in the given volume _

Nikhil619
 one year ago
Best ResponseYou've already chosen the best response.0ok so mass of the alloy..right?

Nikhil619
 one year ago
Best ResponseYou've already chosen the best response.0look..im sorry if u feel im dumb..but hw am i supposed 2 find mass of alloy?

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.3mass = density * volume _

Nikhil619
 one year ago
Best ResponseYou've already chosen the best response.0Volume? again volume of cylinder?

Peter14
 one year ago
Best ResponseYou've already chosen the best response.1volume =pi*radius^2*height

Nikhil619
 one year ago
Best ResponseYou've already chosen the best response.0@ Peter14 I KNOW THAT...im askin if volume of alloy is same as volume of cylinder..

Peter14
 one year ago
Best ResponseYou've already chosen the best response.1yes, because the alloy is in the shape of the cylinder

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.3the allow is in in the cylinder, so there volumes must be equated

Nikhil619
 one year ago
Best ResponseYou've already chosen the best response.0oh ok...k i got this..i have 2 more...can i post them now??

Peter14
 one year ago
Best ResponseYou've already chosen the best response.1sure shub, you take one, i'll take the other

Nikhil619
 one year ago
Best ResponseYou've already chosen the best response.0dont worry i can only post onebyone...

Peter14
 one year ago
Best ResponseYou've already chosen the best response.1start separate threads

Nikhil619
 one year ago
Best ResponseYou've already chosen the best response.0Onebyone is easier for me..one itself is hard to understand..2 means gone!
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