Simon, tessa, and rick are getting lunch together. they want to order different
things so they can try each others' meals. they narrow down their options to a
hamburger, a hot dog, a chicken sandwich, chicken wings, and vegetarian
nachos. they order 3 of the meals. simon does not get chicken. tessa's meal
has a bun on it. how many different lunch combinations could they have
ordered?

the law of definite proportions states samples of a compound will always contain the same proportion of elements by mass. in other words, a given compound will always contain the same elements in the same proportions by mass.the law of multiple proportions states when two elements combine with each other to form more than one compound, then the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.