5. A standardized mass was known to weigh exactly 5.0000g. It was weighed on a newly
acquired, uncalibrated balance as 5.001g. Calculate the absolute error and the percent error.

Absolute error

% Error 5

Explanation:

The absolute error is the the difference in the measured value and the actual value of a quantity.

Here the actual value is grams

The measured value is grams

Absolute error

Percent error

Where AE stands for absolute error and AV stands for absolute value.

%

percent abundance for cu-63 can be shown as:

63 x + 65 (1-x) = 62.9296

65 - 62.9296 = 2 x

x = 1.035

thus, percent abundance for cu-63 is 1.035

percent abundance for cu-65 can be shown as:

63 x + 65 (1-x) = 64.9278

65 - 64.9278 = 2 x

x = 0.0361

thus, percent abundance for cu-63 is 0.0361

the mass spectrum of cu-63 showing the intense peak as, this isotope is found in nature more abundantly around 92.38 % in comparison to cu-65 which is found 62.58 % naturally