You performed an experiment to find out how far three different sizes of arrows would fly from a bow. Which of the following is a new scientific
question that can be investigated in the laboratory?
A. How much money should you spend on arrows?
B. How much farther does the arrow fly when you use a stronger
bow?
C. What type of arrow looks the coolest as it flies?
D. Are people more interested in seeing larger or smaller arrows in
movies?

B how much farther does the arrow fly when you use a stronger bow

Explanation:

the potential energy of the reactants is 200j.

from the energy diagram, the energy of the product formed is 350j; this means that, this reaction is an endothermic reaction, because it absorbs energy from its environment.

the ideal gas law equation is as follows

pv = nrt

where p - pressure

v - volume

n - number of moles

r - universal gas constant

t - temperature

so if the pressure, volume and temperature are already known

we are left with n and r

since r is the universal gas constant that has a known fixed value then r too is known

so we are left with 'n'

once we know temperature volume and pressure

we can find the number of moles of gas present using the ideal gas law equation

this is not my own answer, this is an answer for the same question by the user blahblahmali. i do not claim ownership of this account.