Question

as with the less precise balance, there is also uncertainty in the measurement. from the more precise balance, determine which digit in the measurement 150.88 g is uncertain. then, determine the range of masses this copper block could be accounting for the uncertainty.
less precise balance: mass of cu block 150.9 g, range of possible masses 150.8 - 151.0 g
more precise balance: mass of cu block 150.88 g, range of possible masses ???
i need a hint
uncertain digit
range of possible masses
lower value - upper value g
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Explanation:

Step1: Identify precision of balance

The more precise balance gives a reading of 150.88 g. The last - digit (the hundredths place) is the uncertain digit.

Step2: Determine uncertainty range

For a measurement of 150.88 g, assuming an uncertainty of ± 0.01 g (since the balance measures to the hundredths place), the range of possible masses is from 150.87 g to 150.89 g.

Answer:

lower value: 150.87 g, upper value: 150.89 g