Phenolphthalein turn pink in basic solutions.it turn colourless in acid solution.
Hence options(1)is correct
Conservation, because you are conserving natural resources(water) and reusing aluminum cans which help the environment. Hope this helps!
The answer would be the third one listed, Refraction
Answer:
<h3>The answer is 1.63 %</h3>
Explanation:
The percentage error of a certain measurement can be found by using the formula

From the question
actual mass = 9.80 g
error = 9.80 - 9.64 = 0.16
We have

We have the final answer as
<h3>1.63 %</h3>
Hope this helps you