Unit 5

Question 1

Formula of Density

Answer 1

Density = Mass/ Volume

Question 2

Mass per unit volume of a substance

Answer 2

Density

Question 3

How is density usually expressed?

Answer 3

1 g/cc or 1 g/mL

Question 4

A ratio, expressed decimally, of the weight of a substance to the weight of an equal volume of a substance chosen as a standard, both substances at the same temperature.

Answer 4

Specific Gravity

Question 5

What is the useful standard for sp gr in solids and liquids?

Answer 5

Water

Question 6

What is the useful standard for sp gr in gases?

Answer 6

Hydrogen

Question 7

The formula of sp gr

Answer 7

Sp gr = weight of a substance/ weight of equal volume of water

Question 8

Substances that have a specif c gravity less than 1 are ____.

Answer 8

Lighter than water

Question 9

Substances that have a specif c gravity greater than 1 are ____.

Answer 9

Heavier than water

Question 10

Sp gr are based on data from temperature of ____, except alcohol that is _____.

Answer 10

25 C; 15.56 C

Question 11

What kind of number is density?

Answer 11

Concrete

Question 12

What kind of number is sp gr?

Answer 12

Abstract

Question 13

What is the sp gr of water?

Answer 13

1

Question 14

A special glass bottle used to determine specific gravity ranging from ____.

Answer 14

Pycnometer; 1-50 mL

Question 15

Why pycnometers have fitted glass stoppers?

Answer 15

To allow trapped air and excess fluid to escape

Question 16

What is an automated compounders?

Answer 16

Automated, computer-controlled pharma equipment in the preparation of multicomponent mixtures for parenteral nutrition.

Question 17

What is an important factor of urinalysis?

Answer 17

Sp gr

Question 18

What is sp gr of urine in adults?

Answer 18

1.020-1.028

Question 19

What does sp gr indicates?

Answer 19

Concentration of particle’s in urine
Degree of hydration

Question 20

What does higher than normal sp gr urine indicate?

Answer 20

Concentrated

Question 21

Why is there a higher than normal sp gr of urine?

Answer 21

Due to excess waste products or electrolytes, the presence of glucose (glucosoria), or protein (proteinuria), excessive water loss, decreased fluid intake, etc.

Question 22

What does a low sp gr of urine indicate?

Answer 22

Diluted urine

Question 23

Where does low sp gr of urine result from?

Answer 23

Diabetes insipidus
Renal disease
Increased fluid intake
IV hydration

Question 24

What does percent indicate?

Answer 24

The number o parts in a hundred.

Question 25

How is percent used?

Answer 25

Used to express the strength of a component
Determine the quantity of a component

Question 26

Expresses the number o grams o a constituent in 100 mL o solution or liquid preparation and is used regardless o whether water or
another liquid is the solvent or vehicle.

Answer 26

Percent w/v

Question 27

Expresses the number o milliliters o a constituent in 100 mL o solution or liquid preparation.

Answer 27

Percent v/v

Question 27

Expresses the number o milliliters o a constituent in 100 mL o solution or liquid preparation.

Answer 27

Percent w/w

Question 28

For solutions or suspensions of solids in liquids

Answer 28

Percent w/v

Question 29

For solutions of liquids in liquids

Answer 29

Percent v/v

Question 30

For mixtures of solids or semisolids

Answer 30

Percent w/w

Question 31

For solutions of gases in liquids

Answer 31

Percent w/v