<span>Haha... I guess it depends on how well you cook. If you're a terrible cook and your food catches fire, thats chemical change. Because the compounds in whatever food you're cooking becomes oxidized by O2, meaning it changes to a new compound.
If you're a decent cook and nothing catches fire, then it is only physical change, there are no reactions, just change of state.</span>
Answer:
7.8 moles are needed.
Explanation:
Given data:
Mass of oxygen produced = 125 g
Number of moles of mercury oxide needed = ?
Solution:
Chemical equation;
2HgO → 2Hg + O₂
Number of moles of oxygen:
Number of moles = mass/ molar mass
Number of moles = 125 g/ 32 g/mol
Number of moles = 3.9 mol
Now we will compare the moles of oxygen with mercury oxide.
O₂ : HgO
1 : 2
3.9 : 2×3.9 = 7.8 mol
An acquired trait<span> is defined as a characteristic or </span>trait<span> that produces a phenotype that is a result of an environmental influence. </span>Acquired traits<span> are not coded for in the DNA of an individual and therefore cannot be passed down to offspring during reproduction
So the answer is </span><span>D. An acquired trait is developed during one’s lifetime.</span>
A deficiency in the diet of the element Iodine [I] can lead to goiter. This is why in the U.S. we placed more of it in all table salt ("iodized salt").
<span>The site active of the enzyme bins the substrate to form the complex enzyme-substrate to start a specific chemical reaction. The site active of the enzyme has to fit exactly the shape of the substrate to trigger the catalysis.</span>
