Answer
$|\frac{Q_{to}}{Q_{from}}|=75$
Work Step by Step
We know that:
$|\frac{Q_{to}}{Q_{from}}|=\frac{T_{to}}{T_{from}}$
We plug in the known values to obtain:
$|\frac{Q_{to}}{Q_{from}}|=\frac{300K}{4.0K}=75$
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