Hòa tan hoàn toàn 25,8 gam kim loại kiềm A và oxit của nó vào nước dư thu được dung dịch B Cô cạn dung dịch B thu được 33,6 g chất rắn kha. Xác định kim loại kiềm A và khối lượng mỗi chất trong hỗn hợp

Select all that apply. a beta particle: is electromagnetic energy is an electron has zero charge is emitted from the nucleus has a +2 charge has a -1 charge

Great amounts of electromagnetic energy from our sun and other bodies in space travel through space. which is a logical conclusion about these electromagnetic waves? their energy must be very their frequency must be very low these waves can travel without a medium they only travel through a vacuum of space

When a scientific theory has been tested and proved by the scientific community, it becomes a law