No my doubt is that 63.5 can we round off to whole number to 64 and then solve question 3 will the ans be same as i rounded of atomic mass as atomic mass has to be in whole number i belive ???
Dear student
In chemistry their is decimal variations in atomic mass and they make a great difference while calculating, so it is suggested to kindly use the exact values of atomic masses and not of rounded values.
Like here atomic mass of copper is 63.5 and you are rounding off to 64, there is difference of 0.5 units which are not negligible.
And it is not necessary that atomic mass should be whole number it can be in fraction, like Cu=63.5, Cl=35.5 etc
Hope you understand.
Regards
In chemistry their is decimal variations in atomic mass and they make a great difference while calculating, so it is suggested to kindly use the exact values of atomic masses and not of rounded values.
Like here atomic mass of copper is 63.5 and you are rounding off to 64, there is difference of 0.5 units which are not negligible.
And it is not necessary that atomic mass should be whole number it can be in fraction, like Cu=63.5, Cl=35.5 etc
Hope you understand.
Regards