A certain chemical reaction produces 0.0450 grams of product. How many significant figures does this measurement have?

Question

3
4
2
5

Answer 1

The measurement of 0.0450 grams has 3 significant figures.

Here's how we determine that:

• The leading zeros (0.04) are not significant.
• The digits 4 and 5 are significant.
• The trailing zero (0) after the 5 is significant because it indicates precision in the measurement.

Therefore, the significant digits are 4, 5, and the trailing zero, giving a total of 3 significant figures.