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mr_godi [17]
3 years ago
14

True or false the molecular formula for ibuprofen is the same as the empirical formula

Physics
1 answer:
Elena L [17]3 years ago
7 0
I believe the above statement is true.
The empirical formula for ibuprofen is C₁₃H₁₈O₂, which is also its molecular formula. The empirical formula of a compound represents the lowest whole number ratio of the elements in it. The molecular formula on the other hand indicates the exact number of atoms in a molecule. Ibuprofen is a drug that is used to manage mild to moderate pain, fever, inflammation, menstrual cramps, and types of arthritis. 
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Answer:

5. 9GmM/(10R)

Explanation:

m is the mass of the satellite

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Energy at earth surface = Potential energy (PE) + W

W = Energy at earth surface - Potential energy (PE)

But PE = -\frac{GMm}{R}

Therefore: W = Energy at earth surface - \frac{GMm}{R}

Energy at earth surface (E) at an altitude of 5R = -\frac{GMm}{5r} +\frac{1}{2}mV^2

But V=\sqrt{\frac{GM}{5R} }

Therefore: E=-\frac{GMm}{5R}+\frac{1}{2}m(\sqrt{\frac{GM}{5R} } )^2=  -\frac{GMm}{5R}+\frac{GMm}{10R}  = -\frac{GMm}{10R}

W = E - PE

W=-\frac{GMm}{10R}-(-\frac{GMm}{R})=-\frac{GMm}{10R}+\frac{GMm}{R}=\frac{9GMm}{10R} \\W=\frac{9GMm}{10R}

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