how many significant figures does each value contain? the measurement 400 ml has significant figures. the…

Explanation:

Step1: Recall significant - figure rules for whole numbers with trailing zeros

Non - zero digits are always significant. Trailing zeros in a whole number without a decimal point may or may not be significant. In the number 400, without any additional information, the trailing zeros are not significant. So, only the non - zero digit 4 is significant.

Step2: Recall significant - figure rules for numbers with non - zero digits between zeros

All non - zero digits and zeros between non - zero digits are significant. In the number 208, the digits 2, 0, and 8 are all significant.

Answer:

The measurement 400 mL has 1 significant figure. The measurement 208 ft has 3 significant figures.