WGU D425 Introduction to Chemistry PA and
OA ACTUAL EXAM (2025) 100% VERIFIED AND
UPDATED| complete QUESTIONS AND
ANSWERS | GRADED A+ |NEWEST
VERSION!!!!
several samples of a metal weighed and placed into a graduated
cylinder filled with water to measure their volume by water
displacement
CORRECT ANSWER:
Subtract inital volume from final volume, 1ml= 1cm^3, D=M/V
how many centimeters are there in 3.55m
quantity given: 3.55m
3.55m * (100cm/1m)=
3.55m=355cm
Density converted between mass and volume of a substance
30.2ml sample of ethyl alcohol with a mass of 23.71002g
CORRECT ANSWER:
D=M/V
P symbol letter of density
p=23.71002 g/30.2 ml
p=0.785g/ml
Find mass of and object. density of alcohol is 0.7892g/mL, so alcohol
is 0.7892g per 1ml. determine the mass of alcohol for 2.0mL use
CORRECT ANSWER:
,M =D* V
M=O.7892g/ml *2.0 ml
1.5784g=1.5g
Density = mass/__________
CORRECT ANSWER:
volume
Density of an object?
mass of 2.4019 and volume of 1.40mL
CORRECT ANSWER:
density = 1.7156g/mL= 1.72g/ml
Density of an object?
volume of 32mL and a mass of 12.24g
CORRECT ANSWER:
density= 0.3825g/mL=0.38g/mL
density of an object?
mass of 78.2g/14.2cm^3
CORRECT ANSWER:
density= 5.507g/cm= 5.51g/cm^3
density of an object?
22.57cm^3/55g
CORRECT ANSWER:
density= 2.43686g/cm^3= 2.4g/cm^3
density of an object?
85g/35mL
CORRECT ANSWER:
density= 2.42857 g/mL= 2.4g/mL
,what is the mass of 25.0mL of octane, with a density of 0.702 g/cm
-Given:25.0mL
conversion factors:
1.1mL
2.0.0702=1cm^3 (mL ->cm^3->g)
25.0mL1cm^3/mL0.702g=
CORRECT ANSWER:
density= 17.55g= 17.6g
Calculate the density of 10.4g/mL sample of a substance with a mass
of 35.12g. Enter the answer in the correct number of significant
figures and include the unit g/mL
CORRECT ANSWER:
(v=m/d), 3.38ml
convert 12.5g in to kilograms. enter answer in kg
CORRECT ANSWER:
1Kg =1000g
12.5 g /1000 g
0.0125
calculate the density of an object that has a mass of 19.378 and a
volume of 15.0 ml. enter as g/ml
CORRECT ANSWER:
1.29g/ml
a substance has a mass of 42.10g. if the density of the substance is
known to be 2.431g/ml what volume of substance is present
CORRECT ANSWER:
V=m/d
V=42.10 g/2.431g/ml
, 17.3ml
Ib-> Kg -> g-> cm^3 -> in^3
3.5Ib 1Kg/2.2Ib10^3g/1Kg1cm^3/4.51g1in/2.54cm
must multiply (1in/2.54cm)^3=1in^3/16.387cm^3
3.5Ib1Kg/2.2Ib10^3g/1Kg1cm^31in^3*16.38cm^3
density= 21.53in^3= 22in^3
Calculate the density in g/mL of aluminum with a volume of 0.6cm^3
and a mass of 4.6mg?
Given: 4.6mg and 0.6cm^3
Formula for Density: mass (g)/volume(ml) Find:
Density:1) mg->g 4.6mg*10^-3g/1mg=
4.6*10^-3g=
2) cm^3->mL 0.6cm^3*1mL/1cm^3=0.6mL
step 1 by step 2
3) Divide g/mL 4.6*10^-3/mL=
CORRECT ANSWER:
Density= 0.008 g/mL
what is the density in g/cm^3 of an unknow solution containing 2.3kg
and 8.0L
CORRECT ANSWER:
Density = 0.29g/cm^3
If ethanol has a density of 0.789 g/mL and a mass of 36.4g. Find the
volume in mL
CORRECT ANSWER:
Density= 41.6mL
The density of a solution is 0.791 g/cm^3. What is the volume in cubic
inches of 2.7 Ib of the solution?
CORRECT ANSWER:
95 in^3
OA ACTUAL EXAM (2025) 100% VERIFIED AND
UPDATED| complete QUESTIONS AND
ANSWERS | GRADED A+ |NEWEST
VERSION!!!!
several samples of a metal weighed and placed into a graduated
cylinder filled with water to measure their volume by water
displacement
CORRECT ANSWER:
Subtract inital volume from final volume, 1ml= 1cm^3, D=M/V
how many centimeters are there in 3.55m
quantity given: 3.55m
3.55m * (100cm/1m)=
3.55m=355cm
Density converted between mass and volume of a substance
30.2ml sample of ethyl alcohol with a mass of 23.71002g
CORRECT ANSWER:
D=M/V
P symbol letter of density
p=23.71002 g/30.2 ml
p=0.785g/ml
Find mass of and object. density of alcohol is 0.7892g/mL, so alcohol
is 0.7892g per 1ml. determine the mass of alcohol for 2.0mL use
CORRECT ANSWER:
,M =D* V
M=O.7892g/ml *2.0 ml
1.5784g=1.5g
Density = mass/__________
CORRECT ANSWER:
volume
Density of an object?
mass of 2.4019 and volume of 1.40mL
CORRECT ANSWER:
density = 1.7156g/mL= 1.72g/ml
Density of an object?
volume of 32mL and a mass of 12.24g
CORRECT ANSWER:
density= 0.3825g/mL=0.38g/mL
density of an object?
mass of 78.2g/14.2cm^3
CORRECT ANSWER:
density= 5.507g/cm= 5.51g/cm^3
density of an object?
22.57cm^3/55g
CORRECT ANSWER:
density= 2.43686g/cm^3= 2.4g/cm^3
density of an object?
85g/35mL
CORRECT ANSWER:
density= 2.42857 g/mL= 2.4g/mL
,what is the mass of 25.0mL of octane, with a density of 0.702 g/cm
-Given:25.0mL
conversion factors:
1.1mL
2.0.0702=1cm^3 (mL ->cm^3->g)
25.0mL1cm^3/mL0.702g=
CORRECT ANSWER:
density= 17.55g= 17.6g
Calculate the density of 10.4g/mL sample of a substance with a mass
of 35.12g. Enter the answer in the correct number of significant
figures and include the unit g/mL
CORRECT ANSWER:
(v=m/d), 3.38ml
convert 12.5g in to kilograms. enter answer in kg
CORRECT ANSWER:
1Kg =1000g
12.5 g /1000 g
0.0125
calculate the density of an object that has a mass of 19.378 and a
volume of 15.0 ml. enter as g/ml
CORRECT ANSWER:
1.29g/ml
a substance has a mass of 42.10g. if the density of the substance is
known to be 2.431g/ml what volume of substance is present
CORRECT ANSWER:
V=m/d
V=42.10 g/2.431g/ml
, 17.3ml
Ib-> Kg -> g-> cm^3 -> in^3
3.5Ib 1Kg/2.2Ib10^3g/1Kg1cm^3/4.51g1in/2.54cm
must multiply (1in/2.54cm)^3=1in^3/16.387cm^3
3.5Ib1Kg/2.2Ib10^3g/1Kg1cm^31in^3*16.38cm^3
density= 21.53in^3= 22in^3
Calculate the density in g/mL of aluminum with a volume of 0.6cm^3
and a mass of 4.6mg?
Given: 4.6mg and 0.6cm^3
Formula for Density: mass (g)/volume(ml) Find:
Density:1) mg->g 4.6mg*10^-3g/1mg=
4.6*10^-3g=
2) cm^3->mL 0.6cm^3*1mL/1cm^3=0.6mL
step 1 by step 2
3) Divide g/mL 4.6*10^-3/mL=
CORRECT ANSWER:
Density= 0.008 g/mL
what is the density in g/cm^3 of an unknow solution containing 2.3kg
and 8.0L
CORRECT ANSWER:
Density = 0.29g/cm^3
If ethanol has a density of 0.789 g/mL and a mass of 36.4g. Find the
volume in mL
CORRECT ANSWER:
Density= 41.6mL
The density of a solution is 0.791 g/cm^3. What is the volume in cubic
inches of 2.7 Ib of the solution?
CORRECT ANSWER:
95 in^3
