Here is the complete list of answers and formulas for all the questions (1 to 77) from your file.
This will help you solve all the calculations easily:
Question 1:
Answer:
e) 25000
Formula:
Amount in tsp=Concentration×VolumeAmount in tsp=Concentration×Volume
Question 2:
Answer:
b) 0.15
Formula:
Molarity (M)=Moles of soluteVolume of solution (L)Molarity (M)=Volume of s
olution (L)Moles of solute
Question 3:
Answer:
e) 20 mg
Formula:
Amount of drug=Concentration×VolumeAmount of drug=Concentration×Volu
me
Question 4:
Answer:
c) 500 micrograms
Formula:
Amount in tsp=Concentration×VolumeAmount in tsp=Concentration×Volume
Question 5:
Answer:
a) D50W/D5W = 10/35
Formula:
(C1×V1)+(C2×V2)=(C×V)(C1×V1)+(C2×V2)=(C×V)
Question 6:
Answer:
b) 40 gm from 1% and 20 gm from 2.5%
Formula:
(C1×V1)+(C2×V2)=(C×V)(C1×V1)+(C2×V2)=(C×V)
Question 7:
Answer:
b) 20 ml
Formula:
Volume=Amount of drugConcentrationVolume=ConcentrationAmount of drug
Question 8:
Answer:
a) 0.0165 Molal
Formula:
Molality (m)=Moles of soluteMass of solvent (kg)Molality (m)=Mass of solvent
(kg)Moles of solute
Question 9:
Answer:
b) 400 gm
Formula:
(C1×V1)+(C2×V2)=(C×V)(C1×V1)+(C2×V2)=(C×V)
Question 10:
Answer:
a) 0.4 L
Formula:
Volume to add=Final volume−Initial volumeVolume to add=Final volume−Initi
al volume
Question 11:
Answer:
a) 308 mOsm
Formula:
mOsm=Weight (g)Molecular weight×Number of particles×1000mOsm=Molecu
lar weightWeight (g)×Number of particles×1000
Question 12:
Answer:
a) 0.056 Osm/L
Formula:
Osmolarity=Weight (g)Molecular weight×Number of particlesOsmolarity=Mole
cular weightWeight (g)×Number of particles
Question 13:
Answer:
b) 160 mg
Formula:
Dose=Dose per kg×Weight (kg)Dose=Dose per kg×Weight (kg)
Question 14:
Answer:
a) 798 mg
Formula:
Total dose=Dose per hour×Time (hours)Total dose=Dose per hour×Time (hours
)
Question 15:
Answer:
a) 171 gm
Formula:
Water needed=Total weight−Weight of soluteWater needed=Total weight−Wei
ght of solute
Question 16:
Answer:
a) 2.3
Formula:
Corrected calcium=Measured calcium+0.8×(4−Albumin)Corrected calcium=Me
asured calcium+0.8×(4−Albumin)
Question 17:
Answer:
a) 0.5 L/hr
Formula:
Clearance (Cl)=0.693×VdHalf-life (T1/2)Clearance (Cl)=Half-life (T1/2)0.693×
Vd
Question 18:
Answer:
a) 42 hr
Formula:
Question 19:
Answer:
a) 5%
Formula:
Concentration after n half-lives=Initial concentration×(0.5)nConcentration after
n half-lives=Initial concentration×(0.5)n
Question 20:
Answer:
a) 1026 mOsm
Formula:
Osmolarity=Weight (g)Molecular weight×Number of particles×1000Osmolarity
=Molecular weightWeight (g)×Number of particles×1000
Question 21:
Answer:
a) 25%
Formula:
Bioavailability decrease=AUC after doseAUC before dose×100Bioavailability d
ecrease=AUC before doseAUC after dose×100
Question 22:
Answer:
c) 75%
Formula:
Bioavailability=AUC oralAUC IV×100Bioavailability=AUC IVAUC oral×100
Question 23:
Answer:
b) 0.693/k
Formula:
T1/2=0.693kT1/2=k0.693
Question 24:
Answer:
c) 20 mg
Formula:
Steady state dose=Infusion rate×Time to steady stateSteady state dose=Infusion
rate×Time to steady state
Question 25:
Answer:
d) 2 weeks
Formula:
Time to steady state=5×Half-lifeTime to steady state=5×Half-life
Question 26:
Answer:
a) 10 ml
Formula:
Volume=DoseConcentrationVolume=ConcentrationDose
Question 27:
Answer:
7 capsules
Formula:
Number of capsules=Total doseDose per capsuleNumber of capsules=Dose per
capsuleTotal dose
Question 28:
Answer:
5 hours
Formula:
T1/2=0.693×VdClearanceT1/2=Clearance0.693×Vd
Question 29:
Answer:
b) 12 gm of MgCl dissolve in 100 ml water
Formula:
w/v=Weight of solute (g)Volume of solution (ml)w/v=Volume of solution (ml)
Weight of solute (g)
Question 30:
Answer:
a) 222
Formula:
CrCl (Male)=(140−Age)×Weight (kg)72×Serum creatinineCrCl (Male)=72×Ser
um creatinine(140−Age)×Weight (kg)
Question 31:
Answer:
b) 9.10%
Formula:
Concentration=Weight of soluteTotal weight×100Concentration=Total weight
Weight of solute×100
Question 32:
Answer:
7 ml
Formula:
Volume=DoseConcentrationVolume=ConcentrationDose
Question 33:
Answer:
16 tablets
Formula:
Number of tablets=Total doseDose per tabletNumber of tablets=Dose per tablet
Total dose
Question 34:
Answer:
e) 10 L
Formula:
Clearance=Vd×Elimination rate constantClearance=Vd×Elimination rate consta
nt
Question 35:
Answer:
c) 8.52
Formula:
Volume=MassDensityVolume=DensityMass
Question 36:
Answer:
b) 45 ml
Formula:
Volume=Amount of drugConcentrationVolume=ConcentrationAmount of drug
Question 37:
Answer:
c) 75%
Formula:
Percentage decrease=Initial concentration−Final concentrationInitial concentrati
on×100Percentage decrease=Initial concentrationInitial concentration−Final con
centration×100
Question 38:
Answer:
b) 10 ml
Formula:
Volume=DoseConcentrationVolume=ConcentrationDose
Question 39:
Answer:
b) 1.85%
Formula:
Concentration=Total amount of soluteTotal volume×100Concentration=Total v
olumeTotal amount of solute×100
Question 40:
Answer:
a) 3:1
Formula:
(C1×V1)+(C2×V2)=(C×V)(C1×V1)+(C2×V2)=(C×V)
Question 41:
Answer:
100 parts
Formula:
Concentration=Part of soluteTotal parts×100Concentration=Total partsPart of s
olute×100
Question 42:
Answer:
d) 1.5 gm
Formula:
Amount per tsp=Total amountNumber of tspAmount per tsp=Number of tspTot
al amount
Question 43:
Answer:
15 mg
Formula:
Amount=Concentration×VolumeAmount=Concentration×Volume
Question 44:
Answer:
200 doses
Formula:
Number of doses=Total amountAmount per doseNumber of doses=Amount per
doseTotal amount
Question 45:
Answer:
16.05 riyal
Formula:
Cost=Volume×Specific gravity×Price per kgCost=Volume×Specific gravity×Pri
ce per kg
Question 46:
Answer:
e) 154 mg/dL
Formula:
Concentration (mg/dL)=Concentration (mM)×Molecular weightConcentration (
mg/dL)=Concentration (mM)×Molecular weight
Question 47:
Answer:
120 doses
Formula:
Number of doses=Total amountAmount per doseNumber of doses=Amount per
doseTotal amount
Question 48:
Answer:
a) 30 mg
Formula:
Amount=Concentration×VolumeAmount=Concentration×Volume
Question 49:
Answer:
d) 0.575
Formula:
Molality=Moles of soluteMass of solvent (kg)Molality=Mass of solvent (kg)Mo
les of solute
Question 50:
Answer:
263
Formula:
Plasma osmolarity=2[Na]+[Glucose]18+[BUN]2.8Plasma osmolarity=2[Na]
+18[Glucose]+2.8[BUN]
Question 51:
Answer:
c) 10-12 hours
Formula:
Time to steady state=4−5×Half-lifeTime to steady state=4−5×Half-life
Question 52:
Answer:
6.25%
Formula:
Concentration=Weight of soluteTotal weight×100Concentration=Total weight
Weight of solute×100
Question 53:
Answer:
b) 7.5 ml
Formula:
Volume=DoseConcentrationVolume=ConcentrationDose
Question 54:
Answer:
b) 12.5 mg/ml
Formula:
Concentration after n half-lives=Initial concentration×(0.5)nConcentration after
n half-lives=Initial concentration×(0.5)n
Question 55:
Answer:
95 gm
Formula:
Water needed=Total weight−Weight of soluteWater needed=Total weight−Wei
ght of solute
Question 56:
Answer:
a) 12.5 L
Formula:
Vd=DoseInitial concentrationVd=Initial concentrationDose
Question 57:
Answer:
d) 25 L
Formula:
Vd=DoseInitial concentrationVd=Initial concentrationDose
Question 58:
Answer:
b) 12 gm of MgCl dissolve in 100 ml water
Formula:
w/v=Weight of solute (g)Volume of solution (ml)w/v=Volume of solution (ml)
Weight of solute (g)
Question 59:
Answer:
b) 0.225 gm
Formula:
Amount=Concentration×VolumeAmount=Concentration×Volume
Question 60:
Answer:
545 mg/day
Formula:
Dose=Dose per kg×Weight (kg)Dose=Dose per kg×Weight (kg)
Question 61:
Answer:
a) 1.040 gm
Formula:
Dose=Dose per kg×Weight (kg)Dose=Dose per kg×Weight (kg)
Question 62:
Answer:
c) 0.88
Formula:
Specific gravity=Density of substanceDensity of waterSpecific gravity=Density
of waterDensity of substance
Question 63:
Answer:
b) 2.174 ppm
Formula:
ppm=Mass (mg)Volume (L)ppm=Volume (L)Mass (mg)
Question 64:
Answer:
a) 0.1571 mEq
Formula:
mEq=Weight (mg)×ValencyMolecular weightmEq=Molecular weightWeight (
mg)×Valency
Question 65:
Answer:
d) a and b
Formula:
1 mcg=1000 ng, 1 mg=1000 mcg1mcg=1000ng,1mg=1000mcg
Question 66:
Answer:
a) 2 ppm
Formula:
ppm=Mass (mg)Volume (L)ppm=Volume (L)Mass (mg)
Question 67:
Answer:
Y/X
Formula:
Specific gravity=Weight (Y)Volume (X)Specific gravity=Volume (X)Weight (
Y)
Question 68:
Answer:
a) 0.25
Formula:
Concentration at steady state=DoseVdConcentration at steady state=VdDose
Question 69:
Answer:
Cannot be calculated
Formula:
Cav.ss=DoseClearance×Dosing intervalCav.ss=Clearance×Dosing intervalDose
Question 70:
Answer:
Cannot be calculated
Formula:
Recurrence rate=Number of recurrencesTotal patientsRecurrence rate=Total pat
ientsNumber of recurrences
Question 71:
Answer:
3 days
Formula:
T1/2=0.693×VdClearanceT1/2=Clearance0.693×Vd
Question 72:
Answer:
12-15 hours
Formula:
Time to steady state=4−5×Half-lifeTime to steady state=4−5×Half-life
Question 73:
Answer:
b) 2
Formula:
Concentration ratio=Dose ADose BConcentration ratio=Dose BDose A
Question 74:
Answer:
d) 12 hours
Formula:
Question 75:
Answer:
4
Formula:
Therapeutic index=LD50ED50Therapeutic index=ED50LD50
Question 76:
Answer:
Drug with highest AUC
Formula:
Bioavailability=AUC oralAUC IVBioavailability=AUC IVAUC oral
Question 77:
Answer:
Drug with highest therapeutic index
Formula:
Therapeutic index=LD50ED50Therapeutic index=ED50LD50
