The formation of a gas in a chemical reaction, due to ions changing places, often indicates that the reaction is which type?

double-displacement

single-displacement

synthesis

decomposition

answer is double displacement

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