The answer is b.low frequency,high energy
Answer:
21 gam
Explanation:
mH2SO4 = mddH2SO4.C% = 150. 14% = 21g
Answer: The number of moles of
produced are, 0.287 moles.
Explanation : Given,
Mass of
= 14.9 g
Molar mass of
= 32 g/mol
First we have to calculate the moles of 


Now we have to calculate the moles of 
The balanced chemical equation is:

From the reaction, we conclude that
As, 13 mole of
react to give 8 moles of 
So, 0.466 mole of
react to give
mole of 
Therefore, the number of moles of
produced are, 0.287 moles.
C. The design would not be cost-efficient; the plane would require more fuel due to increased thrust from higher drag.
Refer to picture attached for solution