This is most likely corrosion. When pure silver reacts with sulfur chemicals it forms a black coat tarnish (silver sulfide)
The sulfur comes from hydrogen sulfude from air pollution this may result in an increase in mass or you can say: When iron or any other metal oxidizes, oxygen from the air combines with the iron to make iron oxide or rust. So the weight increases, due to the increased weight of oxygen which has combined with the iron either one they are both correct.
Hope this helped ya
I'll be less soluble when the temperature increases
Answer:
I use translation............
Answer:
<u>2 years</u> to decay to a mass of 50g.
Explanation:
given:
100g of substance with a half life of 2 years
to a mass of 50g
Half life is the amount of time taken by a radioactive material to decay to half of its original value.
ln 2 0.693
Half life T1/2 = ---------- = -----------
λ λ
where λ = rate constant
The initial amount of 100 grams is decaying to a mass of 50 grams is half of its initial value.
Therefore, it will take 2 years for the decay.