Chapter 3
41. How many significant figures are in each?
To determine the number of significant figures in a given quantity, you need to follow these rules:
1. Non-zero digits are always significant. For example, the number 345 has three significant figures because all three digits are non-zero.
2. Zeros between non-zero digits are always significant. For example, the number 2005 has four significant figures because all four digits are non-zero.
3. Leading zeros (zeros to the left of the first non-zero digit) are not significant. For example, the number 0.003 has one significant figure because the leading zeros do not count.
4. Trailing zeros (zeros to the right of the last non-zero digit) are only significant if they are after a decimal point. For example, the number 2000.00 has six significant figures because the trailing zeros after the decimal point count.
5. In scientific notation, all digits in the coefficient are significant. For example, the number 8.90 x 10^4 has three significant figures because all three digits (8, 9, 0) are non-zero.
Now, in chapter 3, you might have been given specific quantities for which you need to determine the number of significant figures. Please provide those quantities, and I will help you determine the significant figures in each.