Module 2- Laboratory Math Flashcards
True/False: all nonzero numbers are significant
TRUE
True/False: all zeros between nonzero numbers are significant
True
True/False: all zeros to the right of the decimal are significant when followed by a nonzero number.
FALSE, not significant dapat
True/False: all zeros to the left of the decimal are significant
FALSE
Identify how many significant figures (SF) are there in 3435.
4 SF
Expressed as equal parts per hundred or the amount of solute per 100 total units of solution
Percent solution
______ is the number of grams of solute per 100g of solution
Weight per weight (%w/w)
Gives the milliliters of solute in 100mL of solution
Volume per volume (%v/v)
Number of grams of solute in 100mL 9f solution
Weight per volume (%w/v)
Most commonly used percent solution in the clin. Laboratory
Weight per volume (%w/v)
True/False: always add water to acid!
False, it should be the other way around.
Expressed as the number of equivalent weights per liter (Eq/L)
Normality
_______ is always equal to or greater than the molarity of the compound
Normality
Routinely expressed in units of moles per liter (mol/L)
Molarity
Used in measuring the ratio between the number of moles in the total volume of the solution
Molarity
Defined as the number of moles of solute per kg of solvent
Molality
Ratio of concentrated or stock material to the total final volume of the solution
Dilution
True/False: dilution factor is inversely proportional to the concentration of the solution
True
Multiple progressive dilutions ranging from more concentrated solutions to less concentrated solutions
Serial dilution
Represents the negative or inverse log of the hydrogen ion concentration
pH
It is the measure of hyroxide ion concentration
pOH
Used to expressed alkalinity of a solution
pOH
