In the simplest of terms, a drug's volume of distribution is that volume of bodily fluid into which a drug dose is dissolved. Therefore, if we know the dose that was given, and we can measure the serum level (concentration), then we can calculate a volume: Volume of distribution = Dose / drug concentration.
As soon as you can make the reservation, do it, but the general consensus is at least three to six months in advance of the date. By three months out, couples have a good idea how many guests will be attending and they can plan a menu that doesnât conflict with their wedding day.
I think it depends on the level of the choir. It's possible to have a very productive rehearsal in less than an hour. Most of the time, we just repeat stuff over and over, when we should move on. I was in a rehearsal that was 20 minutes, and we practiced 5 songs for an event that was to take place later that day! 1/2 - 2 HOURS-depending on what we are learning. We usually try to touch on every song we plan to sing on the following Sunday. We usually allow 45 minutes to 1 hour for a new song. The new song may not be introduced for 2 weeks, though.