1&3 1.complete the following : (a) the approximate volume of a standard 75-mm (\
ID: 880873 • Letter: 1
Question
1&3
1.complete the following :
(a) the approximate volume of a standard 75-mm ("small") test tube is _______ mL.
(b) the clear solution above a precipitate is called the __________.
(c) a ________ is an instrument used to separate and compact a precipitate in a test tube.
(d) the number of drops of water equivalent to 1 mL is about ________.
(e) what is the meaning of a single horizontal line ?
(f) what is the meaning of a pair of short vertical lines?
(j) what is the meaning of a pair of horizontal lines?
(h) what is the meaning of the brackets, [ ]. around a reagent ?
Explanation / Answer
Here are the answers. The notations used are according to the ones used in chemistry terms.
(a) The approximate volume of a standard 75-mm ("small") test tube is __5_ mL.
(b) The clear solution above a precipitate is called the _Supernatant__.
(c) A _Centrifuge_ is an instrument used to separate and compact a precipitate in a test tube.
(d) The number of drops of water equivalent to 1 mL is about __20__.
(e) What is the meaning of a single horizontal line ?
Single horizontal line denotes negative charge on the ion. Ex. Cl-
(f) What is the meaning of a pair of short vertical lines?
In an electrochemical cell it indicates the salt bridge and separation of two half cells.
(j) What is the meaning of a pair of horizontal lines?
Pair of horizontal lines indicate “equal to”
(h) What is the meaning of the brackets, [ ]. around a reagent ?
Meaning of the brackets, [ ]. around a reagent indicates concentration in molarity (moles/L).
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.