So we know that we begin. Our initial condition is 0.3 molar of Betonic acid. So our initial condition is we have 0.3 of this guy, we don't care about this guy, we have none of this guy. And we have a very small amount of this guy. Because remember, in pure water, some water dissociates into HBO plus. And if you're not sure about what I'm talking about, check out the link below.