Answer:
23, 4 g.
Explanation:
The value of any measurement is affected by a measurement error, so the
measure must be expressed with that error. The concept of error and its relation to the measure necessarily implies that the error must be known in an estimated way and expressed only with those figures that are being reasonably certain of its certainty, the rest does not interest and it makes no sense to indicate it.
As usually, we take until three significant figures.
