Whatâs the difference between fat soluble and water soluble vitamins, and what is its significance for people with cystic fibrosis? Water soluble (Vitamin C and all of the B vitamins): Water soluble vitamins are vitamins that our bodies do not store. These vitamins dissolve in water when they are ingested, then go in to the blood stream.
How long and at what temperature should I cook a beef roast in the oven? Roasting is a great cooking method for a large, tender cut of beef  such as a rib or sirloin roast.Sirloin-tip, rump, rolled-rump, eye-of-round or top-round roasts will also benefit from this cooking method if they are graded prime or choice.ooking at a constant oven temperature of 300Â°F (160Â°C), a 5- to 8-lb standing rib roast will take 17-19 minutes per pound for rare, 20-22 for medium rare, 23-25 minutes for medium, and 27-30 minutes for well done.
Check out recipetips.com on Beef Cooking Times. I can give the time and temp for tip round roast beef: Round tip roast 325Â°F for 3-4 lbs for rare is 28-30 min, for med rare is 30-35min, for medium is 38-45 min, for med well is 45-48 min, and for well is 48-50 min.Source(s): recipetips.com and beef cooking times.est Answer: In a preheated 300 degree oven..about 25 minutes per pound for medium..30 minutes for well done. assuming the roast is room temperature or close when put in. if you have a meat thermometer you want 150 degrees in the center for medium or 160 for well. Source(s): BIKER DUDE Â· 7 years ago.