Để hòa tan cần 3.6g một oxit Fex0y càn 50ml đe HCl 2M. Oxit sắt có công thức là?

Determine the wavelength of the light absorbed when an electron in a hydrogen atom makes a transition from an orbital in the n=3 level to an orbital in the n=7 level.

Why are people not able to skip a dive to the deepest part of the ocean

How many moles of bromine are needed to produce 3.23 moles of potassium bromide