1. firewood is often sold by the cord. a cord of wood is a bundle measuring 4 feet by 4 feet by 8 feet. what's the volume of a cord of wood in cubic feet?

To find the volume of the cube we multiply 4 by 4 by 8 to get 128 cubic feet.  The cube has a volume of 128 cubic feet.

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.