Answer:
I would say A
Explanation:
our ancestors are the people that lived long before us
Symbols on the periodic table represent an element.
Cl is also known as chlorine.
Atomic mass W = 183.84 u.m.a
183.84 g ----------- 6.02x10²⁴ atoms
?? g ---------------- 2.1x10²⁴ atoms
2.1x10²⁴ x 183.84 / 6.02x10²⁴ =
3.860x10²⁶ / 6.02x10²⁴ = 641.30 g
hope this helps!
Answer:
Option A
Explanation:
They are portable resources that convert chemical energy to electrical energy