Answer: the correct answer is (A).
Explanation:
Structural formula not only tells us about the number and types of atoms in a molecule but also tells us about the bonded positions of all the atoms in a molecule of that particular compound.
Molecular structure only tells us about the numbers of atoms and types of atoms present in a molecule of that particular compound.
For example: Molecular formula of propanone and propanal are same that is 
but structural formula is different that 
for propane and 
for propanal. Here structural formula is showing that how the atoms in propanone and propanal are bonded together.
Hence, the correct answer is option (A).
Answer is: <span>to convert solar energy into the chemical energy of sugars.
</span><span>Solar energy is stored in chemical bonds of sugars (glucose for example).
</span><span>In carbon dioxide, carbon has oxidation number +4 and in photosynthesis carbon gain electrons (solar energy), so
his oxidation number is lowered (reduced). Light energy is transformed
into chemical energy, that is stored in carbohydrate molecules
(glucose), which are synthesized from carbon
dioxide and water.</span>
Answer:
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Explanation:
The <em>blue whale </em>is the largest animal on Earth. The length of a blue whale is about 25 m, although is is said the largest confirmed measure is 29.9m.
The<em> tiny frogs </em>measure about 10mm.
You can estimate the number of tiny frogs that have the same <em>length</em> as a blue whale dividing the approximate average length of a blue whale by the approximate average length of the tiny frogs.
First convert 25m to mm:
- 25m × 1,000mm/m = 25,000 mm
Now, divide:
Hence, about 2,500 <em>tiny frogs sitting next to each other would measure the same length as a blue whale</em>.
