In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.

Q: Question: A homogeneous reaction between ideal gases that has reached chemical equilibrium can evolve (ie, move towards the formation of more reactants or products) in the following way if this equilibrium is altered: 
 Options:  <1> If the temperature is increased at constant pressure, it will go to where more moles will be produced. <2> If the pressure is increased to constant temperature it will go to where the volume is higher. <3> If an inert gas is added it will go to where this gas is consumed. <4> If a gas that participates in the reaction is added, it will go to where more gas is produced. <5> If the temperature is decreased, it will go to where the reaction is exothermic.

A: 5
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Q: Question: Indicate, which of the compounds listed below, has a higher acidity: 
 Options:  <1> Acetic acid. <2> Hydrogen bromide <3> Sulfuric acid. <4> Carbonic acid. <5> Nitric acid.

A: 2
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Q: Question: Of the following surface markers, one of them is expressed only in the virgin T lymphocytes, while the rest are also found in the population of activated T lymphocytes. Which? 
 Options:  <1> The adhesion molecule L-selectin. <2> The T lymphocyte receptor (TCR). <3> The integrin LFA-1. <4> The CD4 co-receptor molecule. <5> The integrin VLA-4.

A:
1
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