4) What volume will a 200.0 mL sample of a gas at STP occupy when the pressure is doubled at constant temperature?

The answer is true for your question.

Spontaneity tell us the direction of the reaction, but not how fast it goes. gibbs free energy brings together enthalpy, entropy and temperature in one easy formula. g = h - ts. and, finally the sign of delta g is always negative for a spontaneous reaction.