Question

how many significant figures are in the measurement 3.00 ml? * 5 points
1
2
3
how many significant figures are in the measurement 50.2 seconds? * 5 points
1
2
3

Explanation:

Step1: Recall significant - figures rules

Non - zero digits are always significant. Zeros between non - zero digits are significant. Trailing zeros after a decimal point are significant.
For 3.00 mL, 3 is non - zero and the two trailing zeros after the decimal are significant. So there are 3 significant figures.
For 50.2 seconds, 5 and 2 are non - zero and the zero between them is significant. So there are 3 significant figures.

Answer:

1. C. 3
2. C. 3