Answer is: Prepare to measure pH change.
For example for strong acid-base titration, sodium hydoxide and hydrochloric can be used.
Balanced chemical reaction: HCl + NaOH → NaCl + H₂O.
In this reaction pH of equivalence point will be always 7.
Equivalence point is the point which there is stoichiometrically equivalent amounts of acid and base.
Chemist can draw pH curve (graph showing the change in pH of a solution, which is being titrated) for titration and determine equivalence point.
Near equivalence point indicator should change color, so we must pick indicator who change color near pH of equivalence point.
Answer:
Solubility range of KI in 500 grams of water at 20 degrees C is 700-740gm
Explanation:
Using the solubility curve of the solubility of KI with the given temperature
we infer from the graph that at 20 degrees Celsius the solubility of KI is 140-148 grams per 100 grams of water.
so for 500 grams of water the solubility of KI will be
= 140*5= 700gm to 148*5= 740
Solubility range of KI in 500 grams of water at 20 degrees C is 700-740gm
Well, a magnet could DEFINITELY change if it gets exposed to heat, because you could melt the metal and change its shape.
If you hit it hard though, it wouldn't make much of a difference because the magnet is metal, so you'll probably just chip it or leave a dent.
Hope this helps ;)
Metamorphic rocks, because sedimentary rocks are formed from compressed sand, gravel, dirt, etc. and igneous rocks are formed by cooled magma, but of course each type of rock can be formed other ways. so it leaves us with metamorphic.