Calculations

[Aka]

Hi, can some one pleas tell me how to do these questions? Thanks.

 

How many atoms of C are in a mixture containing 0.237 mol of CO2 and 2.38 mol of CaC2?

 

 

calclate the following

the mass (g) of one atom of xenon

the mass (g) of one mole of xenon atoms

the number of atomic mass units in one gram

[ecoli]

How many atoms of C are in a mixture containing 0.237 mol of CO2 and 2.38 mol of CaC2?

 

1 mole of carbon contains 6.0221367 x 1023 carbon atoms.

[Aka]

^ ok, thanks, but how did you calculate this?

[ecoli]

It's avagadro's number... it should be one of your givens, no need to calculate it.

[timo]

And before the typo gives rise to confusion: It´s [math] 6.022 \cdot 10^{23} [/math], not 6.022*1023

[ecoli]

And before the typo gives rise to confusion: It´s [math] 6.022 \cdot 10^{23} [/math'], not 6.022*1023

 

oops... thanks for the fix.