Nuclear explosion i hope that correct
To calculate the amount of the compound in the units of grams, we need to first obtain for the molar mass of the compound. We calculate as follows:
MgCl2 = <span>24.31 + (2 x 35.45) = 95.21 g/mol
</span><span>340 g MgCl2 ( 1 mol / 95.21 g ) = 3.57 mol MgCl2
Hope this answers the question. Have a nice day.</span>
The answer is q= -20 hope this helps
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>
