Question

answer the following questions using the image below. determine the mass (in grams) of the object using the triple beam balance. grams (g) number of sig figs (only use whole numbers) lower calibration measurement: g upper calibration measurement: g be sure to go to the appropriate amount of sig figs. remember, sig figs include all known digits, plus one estimated digit.

Explanation:

Step1: Read the values on each beam

The top - most beam reads 90 g, the middle beam reads 300 g, and the bottom - most beam reads 5.0 g.

Step2: Calculate the total mass

Total mass = 90 + 300+5.0 = 395.0 g

Step3: Determine the number of significant figures

The measurement 395.0 has 4 significant figures. The known digits are 3, 9, 5 and the 0 is also significant as it is after the decimal point.

Step4: Identify lower and upper calibration measurements

The smallest division on the bottom - most beam is 0.1 g. So the lower calibration measurement is 394.9 g and the upper calibration measurement is 395.1 g.

Answer:

Blank 1: 395.0
Blank 2: 4
Blank 3: 394.9
Blank 4: 395.1