WGU D425 Intro to Chemistry Updated
Questions and Answers (2026/2027) |
Practice Review | A+ Verified
• Dimensional Analysis Ex.
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
p=23.71002g/30.2ml=0.7851
p= -✓✓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
2.0mL*(0.7892g/1mL)= -✓✓1.5784g=1.5g
• Density = mass/__________ -✓✓volume
• Density of an object?
mass of 2.4019 and volume of 1.40mL
2.4019g/1.40mL= -✓✓density = 1.7156g/mL= 1.72g/ml
• Density of an object?
,volume of 32mL and a mass of 12.24g
12.24g/32mL -✓✓density= 0.3825g/mL=0.38g/mL
• density of an object?
mass of 78.2g/14.2cm^3 -✓✓density= 5.507g/cm= 5.51g/cm^3
• density of an object?
22.57cm^3/55g -✓✓density= 2.43686g/cm^3= 2.4g/cm^3
• density of an object?
85g/35mL -✓✓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)
25.0mL*1cm^3/mL*0.702g= -✓✓density= 17.55g= 17.6g
• the density of titanium is 4.51g/cm^3. What is the volume in cubic inches of
3.5Ib of titanium?
conversion factors:
1) 2,2Ib=1Kg
2) 1Kg=10^3g
3) 4.51g= 1cm^3
, 4) 2.54cm= 1 in Find in^3
Ib-> Kg -> g-> cm^3 -> in^3
3.5Ib* 1Kg/2.2Ib*10^3g/1Kg*1cm^3/4.51g*1in/2.54cm
must multiply (1in/2.54cm)^3=1in^3/16.387cm^3
3.5Ib*1Kg/2.2Ib*10^3g/1Kg*1cm^3*1in^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= -✓✓Density= 0.008 g/mL
• what is the density in g/cm^3 of an unknow solution containing 2.3kg and 8.0L -
✓✓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 -✓✓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? -✓✓95 in^3
Questions and Answers (2026/2027) |
Practice Review | A+ Verified
• Dimensional Analysis Ex.
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
p=23.71002g/30.2ml=0.7851
p= -✓✓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
2.0mL*(0.7892g/1mL)= -✓✓1.5784g=1.5g
• Density = mass/__________ -✓✓volume
• Density of an object?
mass of 2.4019 and volume of 1.40mL
2.4019g/1.40mL= -✓✓density = 1.7156g/mL= 1.72g/ml
• Density of an object?
,volume of 32mL and a mass of 12.24g
12.24g/32mL -✓✓density= 0.3825g/mL=0.38g/mL
• density of an object?
mass of 78.2g/14.2cm^3 -✓✓density= 5.507g/cm= 5.51g/cm^3
• density of an object?
22.57cm^3/55g -✓✓density= 2.43686g/cm^3= 2.4g/cm^3
• density of an object?
85g/35mL -✓✓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)
25.0mL*1cm^3/mL*0.702g= -✓✓density= 17.55g= 17.6g
• the density of titanium is 4.51g/cm^3. What is the volume in cubic inches of
3.5Ib of titanium?
conversion factors:
1) 2,2Ib=1Kg
2) 1Kg=10^3g
3) 4.51g= 1cm^3
, 4) 2.54cm= 1 in Find in^3
Ib-> Kg -> g-> cm^3 -> in^3
3.5Ib* 1Kg/2.2Ib*10^3g/1Kg*1cm^3/4.51g*1in/2.54cm
must multiply (1in/2.54cm)^3=1in^3/16.387cm^3
3.5Ib*1Kg/2.2Ib*10^3g/1Kg*1cm^3*1in^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= -✓✓Density= 0.008 g/mL
• what is the density in g/cm^3 of an unknow solution containing 2.3kg and 8.0L -
✓✓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 -✓✓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? -✓✓95 in^3
