Suppose you measure the density of an unknown fluid to be 9265kg⋅m−3  with an uncertainty of 100kg⋅m−3 .Which of these are correct ways of writing the measurement in the proper format and in SI units?Group of answer choices(9.3±0.1)×104kg⋅m−3  (9.3±0.1)×103kg⋅m−3   (9300±100)kg⋅m−3    (9265±100)kg⋅m−3  (9.3±100)×104kg⋅m−3

Which of the following units is NOT appropriate for measuring volume?Group of answer choiceslitercentimetermilliliterpintcup

Which one of the following statements is true?Group of answer choicesOnly the quantities we measure directly have uncertainties; once we perform calculations with these quantities our answer is exact.If a height is recorded as h = (12 ± 3) mm, then it is absolutely certain that the height is between 9 mm and 15 mm.When we repeat a measurement many times and take the average value of these measurements, the uncertainty on this average (i.e. the SEM) is generally expected to be smaller than the uncertainty on the individual measurements.We only have uncertainties in first year lab because our equipment is not precise enough; in research labs there is no uncertainty.

If the true value for a measurement is 50.00 mL, which student's measurements are neither precise nor accurate? A   49.95 mL, 49.98 mLB   50.05 mL, 49.97 mLC   48.00 mL, 52.00 mLD   50.01 mL, 49.99 mL

When non-metric units were used in the United Kingdom, a unit of mass called the pound-mass (lbm) was employed, where 1lbm=0.4539kg1lbm=0.4539kg . (a) If there is an uncertainty of 0.0001kg0.0001kg in the pound-mass unit, what is its percent uncertainty? (b) Based on that percent uncertainty, what mass in pound-mass has an uncertainty of 1 kg when converted to kilograms?

Which of these are examples of correctly written measurements?Group of answer choices12.05 mL(12.05 ± 0.2) mL(12.0 ± 0.02) mL(12.05 ± 0.02) mL(12.0 ± 0.2) mL