Big very big hope dis helps im not sure but i think its rite
Answer: 15.433704
Use the periodic table to check the atomic mass, this is the number of grams per mole → 1 mole of Aluminum is 26.982 g
Answer:
They indicate the number of each chemical species that reacts or is formed. Methane and oxygen (oxygen is a diatomic — two-atom — element) are the reactants, while carbon dioxide and water are the products. All the reactants and products are gases (indicated by the g's in parentheses).
Hey there!
A half-life means after a certain amount of time, half of that substance will gave decayed after that time.
So, we divide the 120 atom sample in half 3 times.
120 ÷ 2 = 60
60 ÷ 2 = 30
30 ÷ 2 = 15
There will be 15 atoms of the radioactive sample remaining after three half lives.
Hope this helps!