Cho 11,2 gam Fe tác dụng với 98,0 gam dung dịch H2SO4 10%. a) Viết phương trình phản ứng xãy ra. Tính khối lượng của dung dịch sau phản ứng. b) Tính thể tích khí Hidro thoát ra (ở đktc). Tính nồng độ % của các chất có trong dung dịch sau phản ứng.

An exothermic reaction is conducted in an insulated calorimeter filled with water. the calorimeter is then sealed so that there is no heat exchanged between the contents of the container and the surrounding air. which of the following statements is true about the reaction?

According to coulomb's law, how would the electrical force between particles change if the product of their electrical charge increased?

Asample of air with a volume of 2.20m3 at a pressure of 105 kpa and a temperature of 30c is cooled to 10c and the pressure is reduced to 75.0 kpa. what is the new volume? 6.9 1.34 2.56 43.0 2.88