Calculate the molar mass of a gas which has a density of 1.798g/dm3 at 298K and 1.01×10^5 Nm^-2​

The enthalpy of formation of water is -285.8 kj/mol. what can be inferred from this statement?

When the water vapor cools it condenses select a number that represents his process on the

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?