<u>The acids DO NOT return the pink phenolphthalein indicator. </u>Phenolphthalein in acidic solutions remains colorless but in basic solutions takes a pink color. Phenolphthalein is a weak acid. The indicator changes color, it can be magenta or pink with a pH value of 10.
Answer:
Option A.
Explanation:
Option “A” is the correct answer because the total utility is the total degree of fulfillment or satisfaction that a customer gets through the utilization of a particular good or service. Every individual unit of a commodity has its very own marginal utility, and the total utility is just a summation of marginal utilities. However, when total utility declines the marginal utility becomes negative.
Answer:
The conflict began after Athens and Eretria gave assistance to the Ionians in their rebellion against Persia and its ruler, Darius. Although Darius was able to secure the loyalty of many Greek city-states, both Sparta and Athens executed his ambassadors rather than give up independence.
Explanation:
The answer is representativeness heuristic. This heuristic
play a part in the valuations we make about other people. In the representativeness
heuristic, the likelihood that Anna is a librarian, for instance, is
measured by the mark to which his is representative of, or like
to, the typecast of a librarian.
