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by BlastRoom
Practice counting significant figures in measured values, exact quantities, and scientific notation.
#chemistry
40 questions
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A balance records a sample's mass as 405.2 g. How many significant figures are in that measurement?
A graduated cylinder reading is written as 1002 mL. What is the significant-figure count?
Which count is correct for the measured length 508 cm?
During a density lab, a mass is recorded as 90.01 g. How many significant figures does this value have?
A pressure sensor displays 70008 Pa. Count the significant figures in this measurement.
A student measures 50.7 mL of water. How many significant figures are reported?
The volume of a gas sample is listed as 6004 L. What is the significant-figure count?
A ruler measurement is 30.04 cm. How many significant figures should be counted?
A lab notebook gives a sample volume as 802 L. How many significant figures are in 802 L?
An instrument reports a mass of 90009 g. How many significant figures are present?
A small liquid volume is recorded as 0.00730 L. How many significant figures are in the value?
A powder sample has a mass of 0.00052 g. How many significant figures does this measurement contain?
For the measured volume 0.0405 mL, choose the correct number of significant figures.
A mass is reported as 0.003006 kg. How many significant figures are reported?
A burette reading is 0.0900 L. What is the significant-figure count?
A micrometer reading is 0.01020 cm. How many significant figures should be used?
A gas volume is 0.000808 L. Count the significant figures.
A reagent mass is recorded as 0.00040050 g. How many significant figures are in the measurement?
A cylinder reading is recorded as 120.0 mL. How many significant figures does the decimal point show?
A balance displays 150.00 g for a sample. How many significant figures are shown?
A flask contains 2.500 L of solution. What is the significant-figure count?
A thermometer reading is written as 80.0 °C. How many significant figures are in the reading?
A distance is recorded as 900. m. How many significant figures are indicated?
A strip of metal measures 30.00 cm. Count the significant figures.
A tank is labeled with a measured volume of 1000.0 L. How many significant figures are present?
A pipet delivers 5.00 mL. How many significant figures are in the delivered volume?
A large sample has a recorded mass of 6400.0 kg. How many significant figures does this measurement have?
A stopwatch reading is 10.0 s. What significant-figure count should be used?
A group counts exactly 12 test tubes for a lab setup. How many significant figures does that counted quantity contribute?
The conversion factor 1 L = 1000 mL is used in dimensional analysis. How should its significant figures be treated?
A procedure assigns 4 students to each lab station. In a calculation, what does the counted 4 contribute for significant figures?
The conversion 1 in = 2.54 cm is used to change a ruler length into centimeters. How should the 2.54 be treated for significant figures?
Each vial holds 2.35 g of sample, and the class counted exactly 24 vials. How should the total mass of sample be reported?
In one O2 molecule, the subscript shows exactly 2 oxygen atoms. How many significant figures does that 2 contribute?
A sample is found to contain 6.020 × 1023 atoms. How many significant figures are in the coefficient?
A concentration is reported as 1.0 × 10-3 mol/L. Count the significant figures.
A measurement is written in scientific notation as 3.1400 × 102 g. How many significant figures are reported?
A lab value is expressed as 7 × 105 L. What is the significant-figure count?
The density is listed as 9.81 × 10-2 g/mL. How many significant figures are in the value?
A wavelength is recorded as 4.500 × 106 nm. How many significant figures are shown?
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SI Units, Metric Prefixes and Conversions
40 questions
