If a measurement is recorded as 0.00780, how many significant figures does it co
Practice Questions
Q1
If a measurement is recorded as 0.00780, how many significant figures does it contain?
2
3
4
5
Questions & Step-by-Step Solutions
If a measurement is recorded as 0.00780, how many significant figures does it contain?
Step 1: Identify the number given, which is 0.00780.
Step 2: Look at the leading zeros (the zeros before the first non-zero digit). These are not significant. In this case, the leading zeros are 0.00.
Step 3: Identify the non-zero digits. The first non-zero digit is 7, followed by 8.
Step 4: Count the non-zero digits. Here, we have 7 and 8, which gives us 2 significant figures so far.
Step 5: Look at the trailing zero (the zero after the last non-zero digit, which is 8). This zero is significant because it comes after a decimal point and a non-zero digit.
Step 6: Add the trailing zero to the count of significant figures. Now we have 2 (from 7 and 8) + 1 (from the trailing zero) = 3 significant figures.
