You need a control so you have something to compare the experimental group on-- If you don't have a control group, how will you know what's changed?
Answer:
35.29%
Explanation:
% error = |experimental value - Accepted value| / Accepted Value x 100
Number of questions: 34
Number of questions answered: 22
%error = |22-34| / 34 x 100
Hence, John's percentage error is 35.29 % or 35.3%
Answer:
Spiders and ground beetles.
Why is Anthony so mean? Don't hurt the beetles!
The meaning of observations to see small touch
Answer
0.9516 grams / mL (50.00 has 4 sig digs.)
Remark
You have a couple of extraneous numbers there. You don't care about anything except the mass of the flask + water/alcohol mixture (88.219 grams). and the mass of the flask (40.638 grams)
Formulas
- mass water/alcohol mixture = mass of the flask with fluid - mass flask
- density = mass / volume
Solution
mass water/alcohol mixture = 88.219 - 40.638 = 47.581
- Volume = 50 mL
- Density = mass / Volume
- Density = 47.581/50
- Density = 0.95162 There are 4 sig digs so the answer should be
- 0.9516
