cho 28,1 gồm kẽm và bạc tác dụng vừa đủ với 200g dung dịch axit sunfuric loãng, sau phản ứng thu được 2,24 lít khí (đktc).xác định phần trăm khối lượng mỗi kim loại có trong hỗn hợp đầu và nồng độ phần trăm của các chất có trong dung dịch sau phản ứng

One significant difference between an ionic bond, where electrons are taken from one atom and added to another atom, and a covalent or metallic bond, where electrons are shared is

Solar energy is energy from the sun that is converted into thermal or energy. a. nuclear b. mechanical c. electrical d. chemical

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?