Dos átomos neutros A y B, tienen igual número de neutrones. Si la suma de sus núme- ros atómicos es 76 y la diferencia de sus números de masa es 4. ¿Cuántos electrones

tiene el átomo A?

What parts of the cardiovascular system are affected with atrial fibrillation?

Which action occurs in the third stage of cell division a. the nuclear material of a cell is copied exactly b. the nuclear membrane disappears c. the cell forms two nuclei or d. the nuclear material separates, with half moving to wither side of the cell

Which of the following is true about vigorous intensity movements. playing single tennis or riding a bike on a hilly surface playing soccer riding bike on a flat surface playing double tennis or playing basketball all of the above