Chapter 3 Scientific Measurement Review

Express 0.000 000 000 154 m in scientific notation. 1.54 x 10-10 m

What is 5928 km expressed in scientific notation? 5.928 x 103 km

What is the result of multiplying (2.5 x 1010) x (3.5 x 10-7)?

Perform: (2.5 x 103) + (3.5 x 102) 2.9 x 103

The closeness of a measurement to its true value is a measure of … accuracy

In the measurement 0.503 L, what digit is not known with certainty?

How many significant figures in the measurement 0.0034 kg? 2

How many significant figures in the measurement 40,500 mg? 3

How many significant figures in the measurement 811.40 grams? 5

Round 111.009 mm to 4 sig. figs. 111.0 mm

Record the following measurements with the correct sig figs.

What is the measurement 1042 L rounded to two significant figures? 1.0 x 103 L

Express the sum of 1111 km and 222 km, using the correct sig. figs.

Express the sum of 7.68 m and 5.0 m, using the correct sig. figs.

Express the product of 2. 7 mm and 5 Express the product of 2.7 mm and 5.00 mm, using the correct number of significant figures. 14 mm

Express the product of (4.0 x 10-2 m) x (8.1 x 102 m)

Which group of measurements is the most precise. a) 2 g, 2 Which group of measurements is the most precise? a) 2 g, 2.5 g, 3 g b) 1 g, 3 g, 4 g a

Which is expressed to 3 significant figures: 0. 007 m, or 7 Which is expressed to 3 significant figures: 0.007 m, or 7.30 x 10-7 km 7.30 x 10-7 km

Which contains 2 significant figures: 0.004 40 L, or 0.000 44 L

What quantity is represented by the metric system prefix deci-? 0.1

What is the metric system prefix for the quantity 0.000 001 micro

What is 0.0075 km expressed in µm? 7.5 x 106 µm

What is 7896 mm expressed in m?

78 Liters is equal to how many cubic centimeters? 78 L = 78000 mL 78000 mL = 78000 cm3

Express 987g in pg 9.87 x 1014 pg

Which of the following is NOT correct: a) 1 cm3 = 1 mL b) 10 kg = 1 g c) 1000 mm = 1 m

Convert -32°C to Kelvin 241 K

The actual mass of a certain compound is 1. 420 g The actual mass of a certain compound is 1.420 g. You calculate the mass in your lab work as 1.38 g. What is your percent error? 2.8%

Which of the following volumes is the smallest: 1 milliliter, or 1 microliter

A rectangular block of lead measures 20. 0 mm x 30. 0 mm x 45. 0mm A rectangular block of lead measures 20.0 mm x 30.0 mm x 45.0mm. If the density of Pb is 11.34 g/cm3, calculate the mass of the block. 306 g

As the mass of a substance increases, the density of a given volume of that substance ...

What is the volume of 344 g of ice, if the density is 0.92 g/mL?

The pressure reading from a barometer is 742 mm Hg The pressure reading from a barometer is 742 mm Hg. Express this reading in kilopascals, kPa. (Use dimensional analysis to solve. 760 mm Hg = 1.013 x 105 Pa) 98.9 kPa