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

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

shubhamsrg
 2 years 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
 2 years ago
Best ResponseYou've already chosen the best response.012 % of that? what is that? no.of atoms? or no.of moles?

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

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

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

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

Nikhil619
 2 years 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
 2 years ago
Best ResponseYou've already chosen the best response.3mass = density * volume _

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

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

Nikhil619
 2 years 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
 2 years ago
Best ResponseYou've already chosen the best response.1yes, because the alloy is in the shape of the cylinder

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

Nikhil619
 2 years 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
 2 years ago
Best ResponseYou've already chosen the best response.1sure shub, you take one, i'll take the other

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

Nikhil619
 2 years 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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