Question

Element Z consists of 5% of atoms with a mass of 176.0 amu, 19% have a mass of 177.0 amu, 27% of the atoms have a mass of 178.0 amu, 14% have a mass of 179.0 amu, and the rest have a mass of 180.0 amu. Determine the average atomic mass of element Z rounded to four digits and use the periodic table to identify the element.

Answer 1

178.5 .......................

Answer 2

178.55

Step-by-step explanation:

5*176+19*177+27*178+14*179+35*180 /100

= 880+3363+4806+2506+6300 /100

=17855 /100

178.55