Answer:
P₂ = 800 torr
Explanation:
Given data:
Initial Volume = 4 L
Initial Temperature = 47°C (47+273= 320 K)
Initial pressure = 800 torr
Final volume = 2000 mL (2000/1000 = 2 L)
Final temperature = -113°C (-113+273 =160 K )
Final pressure = ?
Solution:
Formula:
P₁V₁/T₁ = P₂V₂/T₂
P₁ = Initial pressure
V₁ = Initial volume
T₁ = Initial temperature
P₂ = Final pressure
V₂ = Final volume
T₂ = Final temperature
Solution:
P₂ = P₁V₁ T₂/ T₁ V₂
P₂ = 800 torr × 4 L × 160 K / 320 K × 2 L
P₂ = 512000 torr .L. K / 640 k.L
P₂ = 800 torr
Answer:
The total pressure is 27.8 atm
Explanation:
From the ideal gas equation,
PV = nRT
P (total pressure) = nRT/V
n (total moles of gases) = (6/1 moles of hydrogen) + (15.2/14 moles of nitrogen) + (16.8/4 moles of helium) = 6+1.1+4.2 = 11.3 moles
R = 0.082057L.atm/gmol.K, T = 27°C = 27+273K = 300K, V = 10L
P = 11.3×0.082057×300/10 = 27.8 atm
Boron is a metalloid, intermediate between metals and non-metals. It exists in many polymorphs (different crystal lattice structures), some more metallic than others. Metallic boron is extremely hard and has a very high melting point.
They are both small and makeup everything in life
