Step-by-step explanation:
We have a 2.71 mL at STP and we want to find the number of moles. So we know that:
V = 2.71 mL n = ? R = 0.082 atm*L/(mol*K) T = 273.15 K P = 1 atm
To find the number of moles we can use the ideal gas law and solve it for n:
P * V = n * R * T
Answer: Ideal Gas Law