5) Suppose a 10-mlL. burette is used that has calibration marks representing eac

Question

5) Suppose a 10-mlL. burette is used that has calibration marks representing each 1-mL and 0.1- m. Accurate readings should be estimated and recorded to the nearest (a) 1.0-mL, (b) 0.1- mL, (c)0.01-m, ()0.00-. Choose one and explain your answer. be The recortod anser should 6) Although we did not use linear measureme figures in other tools. Consider a block with rectangular sides whose dimensions measured with a millimeter ruler. The height is 254.7 mm, the width is 136.8 mm, and the nt in this lab, we often should consider significant have been depth: 25.3 mm a) Determine the volume of the block in cubic millimeters.

Explanation / Answer

5)

There is a scale of 1ml and there is another scale of 0.1 ml

These scales are on the same lines i.e. after completing each of 10 0.1ml readings there will be 1 reading of 1ml

Thus, the least count will be 0.1ml

Option B

6)

Volume of block = 254.7*136.8*25.3

= 881526.888

Here, the least significant figure is 3 for given input for 25.3

Thus, significant figure for multiplication shall also be 3

Rounding off 881526.888 to 3 significant figures we get 882000

Thus, required answer is 8.82*10^5

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