Chapter 1 HW

Write the numbers represented by the following prefixes: (a) mega−, (b) kilo−, (c) deci−, (d) centi−, (e) milli−, (f) micro−, (g) nano−, (h) pico−.

(a) 1 g = 1.00 × 10^-6 megagrams (b) 1 g = 1.00 × 10^-3 kilograms (c) 1 g = 1.00 × 10^1 decigrams (d) 1 g = 1.00 × 10^2 centigrams (e) 1 g = 1.00 × 10^3 milligrams (f) 1 g = 1.00 × 10^6 micrograms (g) 1 g = 1.00 × 10^9 nanograms (h) 1 g = 1.00 × 10^12 picograms

Express the following numbers in scientific notation. Make sure you use the correct number of significant figures. (a) 0.000000027 (b) 356 (c) 47,764 (d) 0.096

(a) 2.7 x 10^-8 (b) 3.56 x ^2 (c) 4.7764 x 10^4 (d) 9.6 x 10^-2

Determine the number of significant figures in each of the following measurements: (a) 4867 mi (b) 2901 g (c) 0.0000003 cm (d) 4.6 × 10^19 atoms

(a) 4 (b) 4 (c) 1 (d) 2

(a) Beethoven's contribution to music would have been much greater if he had married. - Hypothesis - Theory - Law (b) When a leaf falls, it always heads towards the ground. - Theory - Hypothesis - Law (c) All matter is composed of very small particles called atoms. - Theory - Hypothesis - Law

(a) Hypothesis (b) Law (c) Theory

(a) The force acting on an object is equal to its mass times its acceleration - Theory - Hypothesis - Law (b) The universe as we know it started with a big bang. - Theory - Hypothesis - Law (c) There are many civilizations more advanced than ours on other planets. - Theory - Hypothesis - Law

(a) Law (b) Theory (c) Hypothesis

(a) Length meter mile kilometer cm (b) Volume m3 ft3 yd3 cm3 (c) Mass kilograms ounces pounds grams (d) Time seconds months years (e) Temperature °F K °C

(a) Meter (b) m^3 (c) Kilograms (d) Seconds (e) K

Given that 1 = 2.54 cm, 1.00 cm^3 is equal to

0.00610 in^3

If the density of corn syrup is 1.380 g/mL and a sample of corn syrup has a mass of 32 grams, what is the volume of corn syrup, in liters?

0.023 L

The result of (3.8621 x 1.5630) - 5.98 is properly written as

0.06

An empty container with a volume of 140.0 cm3 is weighed and found to have a mass of 72.7 g. The container is filled with a liquid and reweighed. The mass of the container and the liquid is 200.1 g. What is the density of the liquid to the appropriate number of significant figures?

0.9100 g/cm3

How many mm^3 are in 16.7 cm^3?

1.67 x 10^4 mm^3

The recommended daily allowance (RDA) of calcium is 1.2g. Calcium carbonate contains 12.0% calcium by mass. How many grams of calcium carbonate are needed to provide the RDA of calcium?

10.0 g

How many inches are in 382.5 cm? (1 in= 2.54 cm)

150.6 in

After carrying out the operation (13.7 + 0.0027)/ 8.221, how many significant figures are appropriate to show in the result?

3

Select the correct conversion factor for each step in the following roadmap for a substance with a density of 1 g/mL. Mass (kg) ↓ Mass (g) ↓ Volume (mL)

Mass (kg) ↓ Mass (g) ↓ Volume (mL)

How many significant figures are in 0.006570?

4

The number 1.050 x 10^9 has how many significant numbers?

4

Matter is anything that has mass and occupies space.

False

The number 6.0448, rounded to 3 decimal places, becomes 6.045.

True

The density of water at 40 °C is 0.992 g/mL. What is the volume of 3.23 g of water at this temperature?

V= mL

Select the correct conversion factor for each step in the following roadmap for a substance with a density of 1 g/mL. Volume (L) ↓ Volume (mL) ↓ Mass (g)

Volume (L) ↓ Volume (mL) ↓ Mass (g)

The density of ethanol, a colorless liquid that is commonly known as grain alcohol, is 0.798 g/mL. Calculate the mass of 17.1 mL of the liquid.

m= g

Carry out the following operation as if it were a calculation of real experimental results. Express the answer in the correct units with the correct number of significant figures. (6.75 × 10^−3 mg) − (1.39 × 10^−5 mg)

mg