Lydia has a flower planter box that has a rectangular base whose area is 2 square feet. The sides are 1 foot tall. How many cubic inches of potting soil does she need to fill the planter box to 78

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.