What is the number of moles of gas contained in a 3 l vessel at 300 k with a pressure of 1.50 atm? (given: r = 0.08205 l∙atm/mol∙k)

Who is better, messi or cristiano, i need this for a chemistry class. asap

What is the volume of the fluid in the graduated cylinder with accuracy and measured to the correct degree of precision? 41.2 ml 42.0 ml 41.23 ml 41.89 ml

What does x represent in the formula for the compound xcl4?