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3 years ago

Volume of 2.93 L, what will its pressure? 0.499 am

Chemistry

1 answer:

ladessa [460]3 years ago

8 0

The volume of Oxygen : 20,000 L

<h3>Further explanation</h3>

Given

400 L : initial volume

150 atm : initial pressure

3 atm : final pressure

Required

Final volume

Solution

Boyle's Law

At a fixed temperature, the gas volume is inversely proportional to the pressure applied

$\rm p_1V_1=p_2.V_2\\\\\dfrac{p_1}{p_2}=\dfrac{V_2}{V_1}$

Input the value :

V₂ = (P₁V₁)/P₂

V₂ = 150 atm x 400 L / 3 atm

V₂ = 20,000 L

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Read 2 more answers

"What is the change of entropy for 3.0 kg of water when the 3.0 kg of water is changed to ice at 0"

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Q: What is the change of entropy for 3.0 kg of water when the 3.0 kg of water is changed to ice at 0 °C? (Lf = 3.34 x 105 J/kg)

Answer:

-3670.33 J/K

Explanation:

Entropy: This can be defined as the degree of randomness or disorderliness of a substance. The S.I unit of Entropy is J/K.

Mathematically, change of Entropy can be expressed as,

ΔS = ΔH/T ....................................... Equation 1

Where ΔS = Change of entropy, ΔH = heat change, T = temperature.

ΔH = -(Lf×m).................................... Equation 2

Note: ΔH is negative because heat is lost.

Where Lf = latent heat of ice = 3.34×10⁵ J/kg, m = 3.0 kg, m = mass of water = 3.0 kg

Substitute into equation

ΔH = -(3.34×10⁵×3.0)

ΔH = - 1002000 J.

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Substitute into equation 1

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