Answer:
72.8 % (But verify explanation).
Explanation:
Hello,
In this case, with the following obtained results, the percent error is computed as follows:
Volume of vinegar= 7.0 mL
Volume of NaOH= (7+6.6+6.4)/3= 6.7 mL
Used concentration of NaOH= 1.5M
Concentration of acetic acid= (concentration of NaOH*volume of NaOH)/volume of vinegar= (6.7mL*1.5M)/7.0M= 1.44M
Assuming we have 100 mL (0.100L) of vinegar, moles of acetic acid in vinegar = 1.44M x 0.100 L= 0.144 mol
Mass of acetic acid in 100g of vinegar = 0.144 mol x 60.0g/mol= 8.64 g
% of acetic acid in vinegar=8.64 %
% error in percentage of acetic acid = [(8.64% - 5.0%)/5.0] x 100=72.8 %
Clearly, this result depend on your own measurements, anyway, you can change any value wherever you need it.
Regards.
Answer:
I think it's (a.crushing waves)
Answer:
Models are important in the study of science because they explain a scientific phenomenon that is not directly experienced.
Explanation:
A Model in science is an idea, a process or a system applied by scientists to test hypothesis of a certain phenomenon in study. A model can be used to predict information using the data obtained. However, it is important to mention that after testing a model , a scientist can<u> improve it using new data</u> obtained in the area of study. Models are therefore <u>a vital part of scientific research and the results </u>communicated when explaining a phenomenon.
