A gas mixture contains 0.150 mol of oxygen gas,0.116 of nitrogen gas, and 0.211 mol of argon gas in a 0.500 L flask at 298K. what is the partial pressure

Iwll give extra points to who gets this for ! what type of reaction is this? ?

Zoe is investigating the composition of substance a, an unknown substance. using chemical processes, she analyzes substance a and determines it is composed of sodium, oxygen, and hydrogen atoms in a ratio of 1 : 1 : 1. what is substance a? a. a compound b. an element c. a heterogeneous mixture d. a homogeneous mixture

How do you lengthen a pattern piece? (family and consumer science, sewing)