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A sample of hydrogen has a volume of 1143 mL when the temperature is 225.3 degC and the pressure is 1.061 atm. What will be the volume of the gas at STP? 

For a sample of a gas at a constant pressure, if the temperature decreases the volume must

   For a sample of a gas at a constant pressure, if the volume increases the temperature must
 For a sample of a gas at a constant temperature, if the pressure decreases the volume must
For a sample of a gas at a constant volume, if the pressure increases the temperature must  
 For a sample of a gas at a constant temperature, if the volume increases the pressure must 

 For a sample of a gas at a constant volume, if the temperature decreases the pressure must

 
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