SN, SF, DENSITY, SPECIFIC GRAVITY

Convert the following numbers into scientific notation:

• a) 48,000

4.8x10^4

4.8×104

• b) 0.00037

Convert the following numbers into scientific notation:

3.7x10^-4

3.7×10−4

• c) 905,000

Convert the following numbers into scientific notation:

9.05x10^5

9.05×105

• d) 0.062

Convert the following numbers into scientific notation:

6.2x10^-2

6.2×10−2

• e) 123,400,000

Convert the following numbers into scientific notation:

1.234x10^8

1.234×108

Identify the number of significant figures in the following numbers:

• a) 0.00750

3 significant figures

• b) 340,000

Identify the number of significant figures in the following numbers:

2 significant figures

• c) 6.020

Identify the number of significant figures in the following numbers:

4 significant figures

• d) 0.00409

Identify the number of significant figures in the following numbers:

3 significant figures

• e) 1,030

3 significant figures

A cube of lead has a mass of 11.34 grams and an edge length of 1.0 cm. What is the density of lead?

11.34 g/cm³

A cylindrical piece of metal has a mass of 85.2 grams and a volume of 12.5 cm³.

1. Calculate the density of the metal.

2. If the density of water is 1 g/cm³, calculate the specific gravity of the metal.

1. Density = 6.816 g/cm³

2. Specific Gravity = 6.816

A sample has a specific gravity of 3.5 and a mass of 70 grams. Find the density of the sample.

3.5 g/cm³

A sample of gasoline has a specific gravity of 0.72. If the volume of the gasoline is 25 liters, what is its mass?

• Density = 0.72 g/cm³

• Mass = 18,000 grams (or 18 kilograms)