The definition of mass percent follows:Mass percent 100% 100%For example, suppose a solution is prepared by dissolving 1.0 g of sodiumchloride in 48 g of water. The solution has a mass of 49 g (48 g of H 2 O plus1.0 g of NaCl), and there is 1.0 g of solute (NaCl) present.
Rule of thumb calculation for steak calories per serve is roughly 170 calories per 100 grams. Calories in steak is based on a 3.5 ounce serving or 100 grams. Calories are approximate and can alter with fat marbling of the meat. Frying in fat will add lots of calories. You should grill meat and trim fat from the cut.
A medium fat cut of steak has about 230 calories while a lean cut of steak contains about 160 calories, according to NovaFeel.com. A 3.5 oz serving of 75 percent lean ground beef has 274 calories, while 95 percent lean ground sirloin has about 170 calories.