How many moles of nitrogen gas are contained in 25.0 L at a pressure of 10.0 atmospheres and 300 K? (Hint: R = 0.08215 L atmimol Kl (Show Ideal Gas Equation: Solve for unknown; Substitute known values, calculate your answer.)

Ihat will happen if i added baking soda to vinegar

A50.0g sample of liquid water at 0.0 c ends up as ice at -20.0 c. how much energy is involved in this change?

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