Which u. s. president set the goal of landing an astronaut on the moon before the end the 1960?

What is the ph of a solution with a concentration of 5.2 × 10–8 m h3o+?

Amixture of gaseous sulfur dioxide and oxygen are added to a reaction vessel and heated to 1000 k where they react to form so3(g). if the vessel contains 0.669 atm so2(g), 0.395 atm o2(g), and 0.0851 atm so3(g) after the system has reached equilibrium, what is the equilibrium constant kp for the reaction: 2 so2(g) o2(g) ⇌ 2 so3(g)

In the following redox reaction which is the oxidizing agent and which is the reducing agent? alcl3 + na nacl + al