Module 2- Laboratory Math

Question 1

True/False: all nonzero numbers are significant

Answer 1

TRUE

Question 2

True/False: all zeros between nonzero numbers are significant

Answer 2

True

Question 3

True/False: all zeros to the right of the decimal are significant when followed by a nonzero number.

Answer 3

FALSE, not significant dapat

Question 4

True/False: all zeros to the left of the decimal are significant

Answer 4

FALSE

Question 5

Identify how many significant figures (SF) are there in 3435.

Answer 5

4 SF

Question 6

Expressed as equal parts per hundred or the amount of solute per 100 total units of solution

Answer 6

Percent solution

Question 7

______ is the number of grams of solute per 100g of solution

Answer 7

Weight per weight (%w/w)

Question 8

Gives the milliliters of solute in 100mL of solution

Answer 8

Volume per volume (%v/v)

Question 9

Number of grams of solute in 100mL 9f solution

Answer 9

Weight per volume (%w/v)

Question 10

Most commonly used percent solution in the clin. Laboratory

Answer 10

Weight per volume (%w/v)

Question 11

True/False: always add water to acid!

Answer 11

False, it should be the other way around.

Question 12

Expressed as the number of equivalent weights per liter (Eq/L)

Answer 12

Normality

Question 13

_______ is always equal to or greater than the molarity of the compound

Answer 13

Normality

Question 14

Routinely expressed in units of moles per liter (mol/L)

Answer 14

Molarity

Question 15

Used in measuring the ratio between the number of moles in the total volume of the solution

Answer 15

Molarity

Question 16

Defined as the number of moles of solute per kg of solvent

Answer 16

Molality

Question 17

Ratio of concentrated or stock material to the total final volume of the solution

Answer 17

Dilution

Question 18

True/False: dilution factor is inversely proportional to the concentration of the solution

Answer 18

True

Question 19

Multiple progressive dilutions ranging from more concentrated solutions to less concentrated solutions

Answer 19

Serial dilution

Question 20

Represents the negative or inverse log of the hydrogen ion concentration

Answer 20

pH

Question 21

It is the measure of hyroxide ion concentration

Answer 21

pOH

Question 22

Used to expressed alkalinity of a solution

Answer 22

pOH