This really depends on the size of the chicken, what it is stuffed with, and the type of oven being used, etc.
A chicken can be baked in 40 minutes at 250 C (See recipe in Related links below), but really you should keep an eye on it to make sure that it is cooking as you expect.
So it is also a good idea to check the chicken with meat thermometer to see if it is properly cooked inside.
For a recipe, and how to check if the chicken is cooked, see Related links below.
A turkey should not be cooked at 250 degrees. Cooking at a temperature this low could leave bacteria on the turkey.
about 3 to 3and a half hour
about 2 1/2 hours
40 to 50 minutes per pound.
For 3 days.
Roast at 325 to 350 degrees. Size of turkey will define how long to cook but the internal temp of the bird (@ breast) should be 185 degrees.
Until it is 175 degrees and it will drift the remaining 5 degrees. But for the weight about 3-3 1/2 hrs. Note: I smoke my turkey and it takes about 8-10 hrs. and if you stuff your bird the time will vary.
A really long time. Most turkey cooking times are based on 350 or 375 degrees so 225 would take much longer. 21 pounds is a lot of turkey, and it would be important if you stuffed your turkey or not. The answer is basically 8 hours unstuffed. It would be best to use a meat thermometer to ensure that the breast and the thigh reached at least 165 degrees. If you don't have a meat thermometer, eight hours should be sufficient for you to go out and buy one.
An 11 pound turkey should be cooked for about 3 hours. The turkey can roast in the oven at 325 degrees.
A 14.33 pound turkey should be cooked for about 2 hours. The turkey should be cooked at 325 degrees.
A 5.7 kg turkey should be cooked for at least 3 hours. The turkey should be cooked at 325 degrees.
4hr and 45min at 350 degrees
Until it reaches 180 degrees
The best way to cook a turkey breast cutlet is to preheat the oven to a temperature of 350 degrees. Cook the turkey for at least 15 to 20 minutes until the internal temperature is 170 degrees.
325 degrees
6 hrs
A 31 pound turkey breast should be cooked for at least 4.5 to 5 hours. The turkey can cook in the oven at 325 degrees.