Which of the following is a hydronium ion?
a.) h2o
b.)h3o+
c.)oh-
d.)h+

Stage in which a typical star has completely stopped fusion

If anyone would be able to me out with these three questions it would be these are from the chem 2202 course.

According to le chatelier’s principle, a system in chemical equilibrium responds to stress by shifting the equilibrium in a direction that reduces the stress. normalizes the stress. increases the stress. changes the stress.