Instead of measuring the volume of H2 produced, the pressure change was
measured. This requires knowing what the
initial pressure is. Which of the following
would have the least influence on the initial
pressure inside the flask?

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