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laiz [17]
3 years ago
9

Will vote brainliest on all questions. I have to do them in a series cause this j e r k moderator seems to not like me.

Chemistry
1 answer:
serg [7]3 years ago
3 0
1) Data:

T₁ = <span> 21°C
</span>
<span>T₂ = 51°C.
</span>
<span>V₁ = V₂ = 15.6 L
</span>
<span>P₁ = 249 kPa.
</span>
<span>Pb = 269 kPa.
</span>

<span>Questions:
</span>

• n = ?
• P₂ = ?
• Will the tires burst at the peak temperature? Explain.
• To what pressure should the tire pressure be reduced before starting the ride to avoid bursting of the tires in the desert heat? (Assume no significant change in tire volume.)
Pi = ?


2) Formula:

PV = nRT
P₁ / T₁ = P₂ / T₂

3) Solution

i) n

P₁V₁ = nRT ⇒ n = P₁V₁ / [RT₁]

n = 249 kPa × 15.6 liter / [8.314 (liter-kPa / mol-K) × (21 + 273.15K) ] =

n = 1.588 mol

ii) P₂

P₂ = P₁ T₂ / T₁ = 249 kPa (50 + 273.15 K) / (21 + 273.15K) = 273.5 kPa


iii) Tires will burst, since P₂ > Pb

iv) Pi

Pi / T₁ = Pb / T₂

Pi = Pb T₁ / T₂ = 269 kPa (21 + 273.15K) / (50 + 273.15K) = 244.9 kPa

The pressure shoul to be reduced to less than 244.9 kPa before starting to avoid the <span> bursting of the tires in the desert heat.</span>
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