How do you know if a reaction is exothermic?

Calculate the mass of carbon in 97.0 g of sucrose c12h22o11

What is the approximate vapor pressure when the gas condenses at 70 degrees celsius

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