Acids and bases, when mixed together, create a chemical reaction. During this chemical reaction the atoms rearrange and create new substances. a. What has to be true about the substances before and after the reaction if the reaction took place in a closed system?

b. What states why that has to be true?

Calculate the molarity of 48.0 ml of 6.00 m h2so4 diluted to 0.250 l .

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 energy is it when you flip on a switch on a lamp