You are given 1 mol/dm3 sodium hydroxide, 1 mol/dm3 hydrochloric acid, phenolphthalein indicator and an unknown solution. How would you estimate the pH of the unknown solution? Draw a sketch and write a method

d.) circle motion requires a force to give it a centripetal acceleration.

the answer is 1260

you spend 7 hours in school for 1 school day with 5 school days in 1 school week with 36 school weeks in a school year.

7*5*36= 1260 it's all about multiplying

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

if it's not useful, feel free to report for mistake in answer.