contestada

the molecular mass for O2(g) is 32.0.
By experiment a student measured the mass of O2(g)
to be 28.0. What is the percent error in the student's
result?
A) 1.25%
C) 12.5%
B) 1.43%
D) 14.3%

Respuesta :

Oseni

The percentage error in the student's measurement would be 12.5%.

If the molecular mass of O2(g) is 32.0, it means that 1 mole of the gas weighs 32.0.

A student then measured the mass of 1 mole of O2(g) to be 28.0 (instead of 32). Thus, the student has made some errors in their measurement:

Absolute error = true value - measured value

            = 32 - 28

              = 4.0

Percentage error = error/true value x 100

                           = 4/32 x 100

                              = 12.5%

More on error calculation can be found here: https://brainly.com/question/17928273

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