Dont really fancy a stew, so thought i might braise it, not sure how to do it though, oven or hob?
Steak Carole Two steaks (T Bone, Porterhouse, Delmonico, or your favorite cut) Fresh cut green beans (1 pound) Sliced potatoes (1.5 pounds) Sliced mushrooms (1 cup) 1 cup of red wine A-1 Steak Sauce Onion slices (8 slices) Olive Oil Brown the steaks in oil and set asideIn the same pan brown the onions and potatoesSet them aside as wellPour olive oil in a roaster pan to lightly coat the bottom of the pan and then add the onions, potatoes, and then the green beansPour in the wine and place the steaks on topGive the steaks a light coat of A-1 and bake covered with aluminum foil for 30-40 minutes at 350FNext add the mushrooms and cook for an additional 15-20 minutes The flavors mix and you have tender steaks and steak flavored vegetables and mushrooms.
Your questions are about molar ratioSo let's draw upon an analogy to help us outI want to make complete outfits for my softball teamEach player needs 1 shirt and 1 pair of pants to have a complete uniformIf I have 20 shirts and 16 pants, the most complete outfits I can make are 16The same principle works here, except we're talking the concept of molesBy the reaction, you know that it takes 2 MOLES of Al and 3 MOLES of Cl2 to make 2 MOLES of AlCl3So we know that the number of moles of aluminum at start are going to be the same number of moles of AlCl3 if it all reactsSo, to answer 1, look at the number of MOLES of aluminum (as we have excess chlorine)The atomic weight of aluminum is 26.98 g/mole, so to find the number of moles, divide the mass (19.0 g) by the atomic weight (26.98 g/mole)19.0g/26.98 g/mole 0.704 molesFor 2, we're doing something similar, but with chlorine as the limiting reagent, or the reagent that runs out first (just like the pants in the above anaology)We know that it takes 3 MOLES of chlorine gas to make 2 MOLES of AlCl3Chlorine gas is Cl2 and weighs (235.45 ) 70.90 g/moleSo if you have 24.0 g of chlorine gas, you have (24.0 g/ 70.90 g/mole), or 0.339 moles of chlorineRemember, for every 3 moles of chlorine you make 2 moles of AlCl3So, I multiply 0.339 moles by 2/3 (because the ratio of AlCl3 to Chlorine is 2/3) and get 0.226 moles of AlCl3.
