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.
It's slow! Slow cooking roast beef can take 4 to 8 hours depending on the size of your roast and how cooked you like it. It also generally won't give a nice brown crust around on the outside of the roast. The temperature just isn't hot enough to brown the meat. This can take 4 to 8 hours. 2  It depends on the size of the roast and how done you like it. 3  Remove it from the oven, and let it stand for 20 minutes. 4  The temperature will keep going up while it stands, so it actually finishes cooking outside the oven.