2 \text{ kg}$
Temperature, $T_C = 78 \text{ °C}$
Gage pressure, $P_{gage} = 300 \text{ kPa}$
We need to convert the temperature from Celsius to Kelvin:
$T_K = T_C + 273.15$
$T_K = 78 + 273.15 = 351.15 \text{ K}$
Next, we need to find the absolute pressure. Gage
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