Question

how many sig figs are in this number 1 g = 1000 mg 1 3 4 infinite

Explanation:

Step1: Recall sig fig rules for exact conversions

Exact conversion factors (like \(1\,\text{g} = 1000\,\text{mg}\) from unit definitions) have infinite significant figures because they are defined precisely, not measured.

Step2: Evaluate the options

• Option 1: Incorrect, as exact conversions aren't limited to 1 sig fig.
• Option 3: Incorrect, same reason as above.
• Option 4: Incorrect, it's not a measured value with 4 sig figs.
• Option "infinite": Correct, since this is an exact unit conversion.

Answer:

infinite