Answer:
I think it's either A or D I'm not sure hope that I helped you.
Fe^2 O^3 + 6HCl --> 2FeCl^3 + 3H^2 O
Answer:
About 7.9 L.
Explanation:
We can utilize the ideal gas law. Recall that:

Because the amount of carbon dioxide does not change, we can rearrange to formula to:

Because the right-hand side stays constant, we have that:

Hence substitute initial values and known final values:

Therefore, the final volume is about 7.9 L.
Answer:
d. Pressure
Explanation:
Pressure is not a factor which affect rates of reaction.
However, surface area, temperature, and concentration are factors that affect rates of reaction.
Answer:
9
Explanation:
The structure of fluorophore used in the experiments has been drawn in the attachment. And from the drawing counting we can say that there are 9 sp2-hybridized carbon atoms present. Fiuorophores are a fluorescent chemical compound that can re-emit light upon light excitation. Normally used to produce absorbance and emission spectra.