Astudent is measuring a sample of sodium bicarbonate on an electronic balance that measures to the thousandth of a gram. the balance displays the following value for the mass of the sample: 23.380 g. which of the following choices would be an appropriate way to record this mass on a lab report? (a) 23 g(b) 23.4 g(c) 23.38 g(d) 23.380 g(e) 23.3800 g

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.

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