An element has an atomic number of 17. Calculate the mass of an atom of this element. (Avogadro constant is 6.022x10^23 atoms/mol.)

2.82 * 10^-25 g

Explanation:

Given that :

Atomic number = 17

Mass of an atom of the element =?

Avogadro's constant = 6.022 * 10^23

The mass of an atom. Of the element is :

Atomic mass / Avogadro's constant

= 17 / 6.022 * 10^23

= 2.82 * 10^-25

=

the answer is 1260

you spend 7 hours in school for 1 school day with 5 school days in 1 school week with 36 school weeks in a school year.

7*5*36= 1260 it's all about multiplying