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Reika [66]
3 years ago
5

What are insulated foam cups most likely made out of? polyethylene polystyrene nylon thread vulcanized rubber

Chemistry
2 answers:
Solnce55 [7]3 years ago
6 0

Answer:b

Explanation:I d the

tankabanditka [31]3 years ago
3 0

Answer is: polystyrene.

Expanded polystyrene is used to manufacture foam cups.

Polystyrene production is several million tonnes per year.

Polystyrene is a synthetic aromatic hydrocarbon polymer made from the monomer styrene.

Styrene (ethenylbenzene) is an organic compound with the chemical formula C₆H₅CH=CH₂. It is a colorless oily liquid.

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Name the following cycloalkane:
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A 2.5 L container is filled with propane. The ambient temperature is 25°C and the
madam [21]

Answer:

The pressure inside the container will be 3.3 atmospheres

Explanation:

The relationship between the temperature and pressure of a gas occupying a fixed volume is given by Gay-Lussac's law which states that the pressure of a given amount of gas is directly proportional to its temperature on the kelvin scale when the volume is kept constant.

Mathematically, it expressed as: P₁/T₁ = P₂/T₂

where P₁ is initial pressure, T₁ is initial temperature, P₂ is final pressure, T₂ is final temperature.

The above expression shows that the ratio of the pressure and temperature is always constant.

In the given question, the gas in the can attains the temperature of its environment.

P₁ = 3 atm,

T₁ = 25 °C = (273.15 + 25) K = 298.15 K,

P₂ = ?

T₂ = (55 °C = 273.15 + 55) K = 328.15 K

Substituting the values in the equation

3/298.15 = P₂/328.15

P₂ = 3 × 328.15/298.15

P₂ = 3.3 atm

Therefore, the pressure inside the container will be 3.3 atmospheres

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