Astudent places a 12-gram cube of ice inside a container. after six hours, the student returns to observe the contents of the container. which sentence suggests that the container is an open system? oa. the container contains 12 grams of liquid water and no ice. ob. the container contains 12 grams of ice and no liquid water. oc. the container contains 8 grams of liquid water and no ice. the container contains 8 grams of ice and 4 grams of liquid water. od. o e. the container contains 8 grams of liquid water and 4 grams of water vapor. reset next

Asolution contains 225 g of sodium chloride, nacl, dissolved in enough water to make a 0.25 l of solution. what is the molarity of the solution?

Calculate the ratio of h+ ions to oh– ions at a ph = 7. find the concentration of h+ ions to oh– ions listed in table b of your student guide. then divide the h+ concentration by the oh– concentration. record this calculated ratio in table a of your student guide. compare your approximated and calculated ratios of h+ ions to oh– ions at a ph = 7. are they the same? why or why not? record your comparison in table a. what is the concentration of h+ ions at a ph = 7? mol/l what is the concentration of oh– ions at a ph = 7? mol/l what is the ratio of h+ ions to oh– ions at a ph = 7? : 1

What is the lowest number energy level where a d sublevel is found