Apet toy manufacturer is designing a plastic ball for dogs that will float in water. in order for the ball to float it must have a density that is less than 1 gram per milliliter (the density of water). the approved design has a mass of 115 grams and a density of 0.600 g/ml. use the density formula d = m v to determine the radius of the ball to the nearest hundredth of a centimeter. volume of a sphere = 4 3 π r 3

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.