Answer:
112 of O2
Explanation:
Now if simply oxygen is given so we'll consider O2
3.5 moles O2 means,
3.5 x 32 = 112 grams of O2
Rain is produced my clouds there
One possible reason for the general tread could be the rise in population and the need to sustain oil production for items and objects dependent upon oil or creation or operation.
It may be sustainable due do the dependence on oil already... Yet could change at any minute due to the use of anything new.
Well, becoming more ecological in nature. Using less plastic and recycling more, getting off of conventional cars, getting more educated about even more techniques.
I hope that may help, if not, just tell me. :D
Answer:
3 years
Explanation:
Given data:
Initial amount of sample = 160 Kg
Amount left after 12 years = 10 Kg
Half life = ?
Solution:
at time zero = 160 Kg
1st half life = 160/2 = 80 kg
2nd half life = 80/2 = 40 kg
3rd half life = 40 / 2 = 20 kg
4th half life = 20 / 2 = 10 kg
Half life:
HL = elapsed time / half life
12 years / 4 = 3 years
