Question

conceptual checkpoint 2.2 a 10.0 ml graduated cylinder has marks every 0.1 ml. which measurement reports the correct number of significant figures on this graduated cylinder? 2.9 ml 3 ml 2.94 ml 2.941 ml

Explanation:

Step1: Understand significant figures for measurement

When using a graduated cylinder with marks every 0.1 mL, we can estimate one digit beyond the marked precision. The marked precision is to the tenths place (0.1 mL), so we can estimate to the hundredths place (0.01 mL).

Step2: Analyze each option

• 2.9 mL: This is to the tenths place. But we can estimate to the hundredths place, so this doesn't use the full precision.
• 3 mL: This is to the ones place, which is less precise than needed.
• 2.94 mL: This is to the hundredths place. The graduated cylinder has marks every 0.1 mL (tenths place), so we can estimate one more digit (hundredths place), so this is appropriate.
• 2.941 mL: This is to the thousandths place. We can't estimate to the thousandths place with marks every 0.1 mL (we can only estimate one digit beyond the marked precision, which is tenths → hundredths, not thousandths).

Answer:

2.94 mL