Answer:
1. 0.2 g/cm³.
2. 1 g/cm³.
3. 0.72 g.
Explanation:
1. Determination of the density of the bread.
Volume (V) = 2270 cm³
Mass (m) = 454 g
Density (D) =?
The density of a substance is simply defined as the mass of the substance per unit volume of the substance. It is represented mathematically as:
Density (D) = mass (m) /volume (V)
D = m/V
With the above formula, we can calculate the density of the bread as follow:
Volume (V) = 2270 cm³
Mass (m) = 454 g
Density (D) =?
D = m/V
D = 454/2270
D = 0.2 g/cm³
Therefore, the density of the bread is 0.2 g/cm³.
2. Determination of the density of water.
Volume (V) = 1 L
Mass (m) = 1000 g
Density (D) =?
Next, we shall convert 1 L to cm³. This can be obtained as shown below:
1 L = 1000 mL
1 mL = 1 cm³
1000 mL = 1000 cm³
Therefore,
1 L = 1000 mL = 1000 cm³
Therefore, 1 L is equivalent to 1000 cm³.
Finally, we shall determine the density of water as follow:
Volume (V) = 1000 cm³
Mass (m) = 1000 g
Density (D) =?
D = m/V
D = 1000 / 1000
D = 1 g/cm³
Therefore, the density of water is 1 g/cm³.
3. Determination of the mass of the block of wood.
Density (D) = 0.6 g/cm³
Volume (V) = 1.2 cm³
Mass (m) =...?
D = m/V
0.6 = m/1.2
Cross multiply
m = 0.6 × 1.2
m = 0.72 g
Therefore, the mass of the block of wood is 0.72 g.
