Answer
$P_B = 2P_A$
Work Step by Step
$P_A = nRT/V = (1×280 ×R)/1 =280R$
$P_B = nRT/V = (2×560 ×R)/2 =560R$
$P_B/P_A = 560R/280R=2$
$P_B = 2P_A$
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