0.52 g of sodium was added to 100 cm3 of water. Calculate: a) The volume of hydrogen evolved at 298 K and 100 kPa. b) The concentration of the sodium hydroxide solution produced, assuming the volume of water does not change. 2Na+ 2H2O + 2NaOH + H2​

Plz mark brainliest 30 points 1) find the momentum of a 12 kg snowball that is rolling with a velocity of 9 m/s. 2) an 8 ball with a mass of .5 kg is sitting at rest. it is hit by the cue ball (1 kg) traveling at 2.5 m/s. if the cue ball is at rest after the collision, how fast is the 8 ball traveling after the collision? 3) two football players are running toward each other. if the offensive player is 75 kg and is running 8 m/s, how fast must the 60 kg defensive player run in order for the two players to hit and stop?

What does the xylem do? stores the glucose captures the sunlight absorbs oxygen into the leaf carries water from the roots to the leaves

Which of the following represents the ester functional group? a. -coo- b. -cho c. -cooh d. c=o