Tag: measurement of properties
Questions Related to measurement of properties
Which set of figures will be obtained after rounding up the following upto three significant figures?
34.216, 0.04597, 10.4107
Few figures are expressed in scientific notation. mark the incorrect one.
Which of the following rules regarding the significant figures and calculations involving them is not correct?
Magnitude of $e/m$ for ${O^ - }$
Two students are working on an AP Chemistry lab. Their assignment is to determine experimentally the density of a nonvolatile organic liquid, limestone. The accepted value for the density of limestone is $0.8422\ g/mL$. Each student conducts three separate density determinations, then calculates a mean (average) value for the density and the standard deviation for their three trials.
Student A | Student B | |
---|---|---|
Density #$1$ | $0.8421 g/mL$ | $0.8408 g/mL$ |
Density #$2$ | $0.8514 g/mL$ | $0.8502 g/mL$ |
Density #$3$ | $0.8355 g/mL$ | $0.8332 g/mL$ |
Mean Density | $0.8430 g/mL$ | $0.8414 g/mL$ |
Standard Deviation | $0.0080$ | $0.0085$ |
The results and calculations for each students are shown in the table below.
Of the four descriptions given below, which BEST interprets the accuracy and precision of Student A and Student B?
Among the following, the highest value of prefix is:
The standard temperature is:
The S.I unit of atmospheric pressure is :
What is the SI unit of mass?
Unit of luminous intensity is: