A student measures the volume of a liquid and finds it to be 40 mL. How many significant figures are in the measurement?

A) 1***
B) 2
C) 3
D) 4

Is this correct? I'm not entirely sure if it's 1 or 2...

Can someone please check my answer, I would greatly appreciate it...

Ms. Sue??? Anyone???

1 is correct. Trailing zeroes do not count.

if u go to ca and r doing geometry the test answers are !.d 2.a 3.a 4.b 5.d

Anonymous is 100% correct

To determine the number of significant figures in a measurement, we need to understand the rules for significant figures:

1. All non-zero digits are significant. In the given volume measurement of 40 mL, both the 4 and the 0 are non-zero digits, so they are significant.

2. Zeros between non-zero digits are significant. However, in the given measurement, there is no zero between the 4 and 0, so this rule doesn't apply.

3. Leading zeros (zeros to the left of the first non-zero digit) are not significant. In the given measurement, there are no leading zeros.

4. Trailing zeros (zeros to the right of the last non-zero digit) may or may not be significant, depending on whether there is a decimal point. If there is no decimal point, they are not significant. In the given measurement, there is no decimal point, so the trailing zero is not significant.

Based on these rules, the correct answer is 1 significant figure (option A). The 4 in 40 mL is the only significant digit in the measurement.

So, yes, your answer of option A) 1 is correct.