What is the major difference between the two-dimensional and three- dimensional models of ethane and methane? when might you choose to use a two-dimensional model rather than a three-dimensional model when representing one of the molecules?

Calculate the estimated density of each ball. use the formula d = m/v where d is the density, m is the mass, and v is the volume. record your calculations in table a of your student guide. given that the density of water is 1.0 g/cm3, make a prediction about whether each ball will float in water. record your prediction in table a. what is the estimated density of the table tennis ball? record your answer to the nearest hundredth