Why is the law of conservation of mass true? a. all atoms at the start of a chemical reaction are present at the end of the reaction

b. All the molecules in a substance remain intact during a chemical reaction

c. The substances at the start of a chemical reaction gather more atoms to make up for those lost in the reaction

d. all molecules at the start of a chemical reaction are present at the end of the reaction

Ihat will happen if i added baking soda to vinegar

Plz mark brainliest 30 points1) 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?

Which of these statements explains the difference between nuclear binding energy and the strong nuclear force ?