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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

Respuesta :

Answer:

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.

Explanation:

Volume of Prism is calculated by :

[tex]volume = L\times W\times H[/tex]

Length = 3 cm

Width = 2 cm

Height = 1 cm

[tex]volume = 3\times 2\times 1[/tex]

V = 6 cm3

mass = 120 g

[tex]Density = \frac{mass}{Volume}[/tex]

[tex]Density = \frac{120}{6}[/tex]

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

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