Máy quang phổ cho ta đồ thị gì ?Thông quá đồ thị đó , ta cần xác định giá trị của đại lượng nào ? Vì sao

Sorry i don’t know what to do

stands for electromotive force and it is measured in volts. despite its name, it is not actually the force in the sense of being a "pushing" or "pulling" (not measured in newtons).an equation that relates emf,  ℰ,  to a battery's terminal voltage, v, current, i, and internal resistance, r, is    ℰ = v + irin this case, the emf can be interpreted as a voltage—a difference in electric potential.i would not say that it would be considered an energy. if emf can be defined as the energy/work per a unit charge from a battery or other electric source, then it is not strictly energy.

The fertilized egg  begins to develop into a hollow ball of cells called the blastocyst. 

Iwould think it is temperature, silica, oxides (gases)