Đun nóng hỗn hợp gồm 6 gam axit axetic và 6.2 gam etylen glicol với axit sunfuric đặc . Thu được m gam hợp chất hữu cơ T ( chứa một chức este ) với hiệu suất là 40% . Giá trị của m là ?

100mg magnesium reacts with 20ml of 1.0m hcl

24. a sports ball is inflated to an internal pressure of 1.85 atm at room temperature (25 °c). if the ball is then played with outside where the temperature is 7.5 °c, what will be the new pressure of the ball? assume the ball does not change in volume nor does any air leak from the ball a) 0.555 atm b) 1.74 atm c) 1.85 atm d) 1.97 atm

2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here