The pressure : 1.536 atm
<h3>Further explanation</h3>
Same container=same volume⇒the volume is constant
Gay Lussac's Law
<em>When the volume is not changed, the gas pressure in the tube is proportional to its absolute temperature </em>
P₁=1 atm
T₁=20+273=293 K
T₂=450 K
the pressure :
I think 8, because you have to end up with a balanced equation.
Concentration = (2 * 0.1 * 100 + 1 * 0.150 * 200) / (200+100)
Concentration = 0.167 M of K+ ions