What is the mass of a sample containing 3.5 moles of silicon atoms? 28 g
72g
98 g
35 g

a chemical reaction happens

explanation:

under a microscope, cancer cells may look very different from normal cells. they often have different sizes and some may be larger than normal while others are smaller. cancer cells are often abnormally shaped and the control centre of the cell (the nucleus) may have an abnormal appearance.

i think? ?

b) nuclear ive learned that in a pedtrodic table