A scuba tank has pressure of 195 kpa at temperature 10 c the volume of the tank is 350 L how many grams of air ins in the tank?

Explanation:

Hello,

In this case, considering the ideal gas equation as:

We can first compute the moles of air at the given conditions of 195 kPa (1.92 atm), 10 °C (283K) and 350 L:

Next, since the molar mass of air is 28.97 g/mol, the mass is computed to be:

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your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.