How many significant figures are present in the measured quantity 64.00 g?

• A. 2
• B. 4
• C. 5
• D. 3

Answer: (B)

Verified step by step guidance

1. Identify the digits in the number 64.00. The number consists of the digits 6, 4, 0, and 0.
2. Recall the rules for significant figures: all nonzero digits are significant, zeros between nonzero digits are significant, and trailing zeros in a decimal number are significant.
3. Since 64.00 has two trailing zeros after the decimal point, these zeros are significant because they indicate precision in the measurement.
4. Count all the digits: 6, 4, 0, and 0, which gives a total of 4 significant figures.
5. Therefore, the measured quantity 64.00 g has 4 significant figures.