If a length is measured as 150.0 cm, how many significant figures does this measurement have?
Practice Questions
1 question
Q1
If a length is measured as 150.0 cm, how many significant figures does this measurement have?
2
3
4
5
The measurement 150.0 cm has 4 significant figures because the trailing zero after the decimal point is significant.
Questions & Step-by-step Solutions
1 item
Q
Q: If a length is measured as 150.0 cm, how many significant figures does this measurement have?
Solution: The measurement 150.0 cm has 4 significant figures because the trailing zero after the decimal point is significant.
Steps: 5
Step 1: Identify the digits in the measurement 150.0 cm.
Step 2: Count all non-zero digits. In this case, 1 and 5 are non-zero.
Step 3: Count the zeros. The zero between 1 and 5 is significant because it is between non-zero digits.
Step 4: The zero after the decimal point (the last zero) is also significant because it indicates precision.
Step 5: Add up all the significant figures: 1 (from 1) + 1 (from 5) + 1 (from the zero between) + 1 (from the zero after the decimal) = 4 significant figures.
