In cell respiration, the chemical energy in sugar is transferred to ATP. In the process, some of its chemical energy is changed to heat<span>. As with </span>photosynthesis<span>, the amount of energy that enters the system in the chemical bonds of sugar equals the amount transferred to ATP plus the amount changed to </span>heat<span>.</span>
There are 2 grams remain
<h3>Further explanation</h3>
Given
t1/2 = 30 years
t = 170 years
No = 100 g
Required
Remaining sample
Solution
General formulas used in decay:

Input the value :

I Would think it would be C Since Humans can't live 500 years but then yet again it is light years not regular years i think if you find how man years is 500 light years the that could help you in finding the answer
<span>Whereas physical properties of a substance tells us about how the substance looks, smells, etc, the chemical properties of a substance basically tells us how the substance will react with other substances. Therefore, knowing the chemical property of a substance tells us how the substance reacts with others.Hope this helps. Let me know if you need additional help!</span><span />
H
Since K stands for potassium, C stands for Carbon and O stands for Oxygen