count the significant digits in each of these measurements:\nmeasurement number of significant…

count the significant digits in each of these measurements:\nmeasurement number of significant digits\n0.004200 j\n1.8×10⁻³ ml\n-5.0×10⁻³ kj/mol\n84400. kg

count the significant digits in each of these measurements:\nmeasurement number of significant digits\n0.004200 j\n1.8×10⁻³ ml\n-5.0×10⁻³ kj/mol\n84400. kg

Answer

Explanation:

Step1: Identify significant - digit rules for 0.004200 J

Leading zeros are not significant, non - zero digits and trailing zeros after a non - zero digit are significant.

Step2: Determine significant digits for 1.8×10⁻³ mL

In scientific notation, the digits in the coefficient are significant.

Step3: Find significant digits for - 5.0×10⁻³ kJ/mol

The digit 5 and the 0 after it in the coefficient are significant.

Step4: Count significant digits for 84400. kg

The trailing zero after the decimal point is significant, and all non - zero digits are significant.

Answer:

4 2 2 5