Trong tự nhiên có hai đơn vị bền của của C là 12C và 13C . Nguyên tử khối trung bình là 12,011. Phần trăm về khối lượng của 13C trong tự nhiên là

How do you identify the anode on a power source such as a battery? how do you identify the cathode? how are terms anion and cation?

If a gas has an initial pressure of 101kpa and a volume of 10l, then it expands to a volume of 20l, what is the new pressure?

The diagrams to the right show the distribution and arrangement of gas particles in two different containers. according to kinetic-molecular theory, which of the following statements is true? check all that apply. if the temperatures of both containers are equal, container a has greater pressure than container b. if the volume of container a decreased, its pressure would decrease. if the pressure in both containers is equal, container a has a lower temperature than container b.