How many moles of gas are present in a sample that occupies at Standard Temperature and Pressure (STP)?
Answer and explanation
Correct answer: C. 2.0 moles
- Step 1: At STP ( and ), one mole of any ideal gas occupies a molar volume of .
- Step 2: Calculate moles: .
Answer
2.0 moles.
Why not the others: '0.5 moles' inverts the ratio (); '1.0 mole' is ; '3.0 moles' corresponds to .
Practise more Atomic Structure, Bonding, Reactions and Organic Chemistry.
Free questions with an explanation for every one, and full timed Tahsili SAAT (Saudi Arabia) mock tests.
More Atomic Structure, Bonding, Reactions and Organic Chemistry questions
- What is the ground-state electron configuration of a neutral iron atom ()?
- Which of the following elements has the highest electronegativity value on the Pauling scale?
- What is the geometric molecular shape of a water molecule () predicted by VSEPR theory?
- According to Le Chatelier's principle, what will happen to the equilibrium of the exothermic synthesis of ammonia…
- What is the pH of a aqueous solution of hydrochloric acid (), assuming complete dissociation?
- What is the oxidation state of sulfur in the sulfate ion ()?