Hi I need help please!

What is the ph of a 0.0010 m hno3? 1.0 3.0 4.0 5.0

8) a mixture of he, ne and ar has a pressure of 7.85 atm. if the ne has a mole fraction of 0.47 and 8) ar has a mole fraction of 0.23, what is the pressure of he? a) 4.2 atm b) 3.7 atm c) 5.5 atm d) 2.4 atm e) 1.8 atm

Which of the following is not one of the steps in the scientific method a. hypothesize b. summarize c. analyze d. familiarize