Question

I need help...

1) The properties of a rectangular prism are listed below:
Mass = 120 g
Length = 3 cm
Width = 2 cm
Height = 1 cm
What is the density of the rectangular prism?
10 g/cm3
20 g/cm3
360 g/cm3
720 g/cm3

2) What best describes a material's ability to dissolve?
Solubility
Melting point
Boiling point
Thermal conductivity

3) What best defines an intensive property of a substance?
A property that is observable
A property that is measurable
A physical property that depends on sample size
A physical property that is independent of sample size

Answer 1

1. Density of the rectangular prism is 20 g/cm3

2. A material's ability to dissolve : Soubility

3. Intensive property : A physical property that is independent of sample size.

Step-by-step explanation:

Volume of Prism is calculated by :

`volume = L* W* H`

Length = 3 cm

Width = 2 cm

Height = 1 cm

`volume = 3* 2* 1`

V = 6 cm3

mass = 120 g

`Density = (mass)/(Volume)`

`Density = (120)/(6)`

Density = 20 g/cm3

2.

Solubility :

• It is the chemical property of the substance.

• It shows the ability of the solute to dissolve in the solvent at a given temperature.

3.

Intensive Properties:

• These are bulk properties(Do not depend upon the amount of matter present)
• They are independent of sample size.
• Example : boiling point,melting point,temperature,refractive index