D425 WGU CHEMISTRY QUESTIONS & ANSWERS
Calculate the density of 10.4ml 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 - answer -
Convert 12.5g in to kilograms. Enter answer in kg - answer -0.0125
Calculate the density of an object that has a mass of 19.378 and a volume of 15ml.
Enter as g/ml - answer -
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 - answer -
Several samples of a metal weighed and placed into a graduated cylinder filled with
water to measure their volume by water displacement - answer -
Several samples of metal were weighed and placed into the graduated cylinder filled
water to measure their volume by water displacement q - answer -
Dimensional analysis ex.
How many centimeters are there in 3.55m
Quantity given: 3.55m
3.55m * (100cm/1m)= - answer -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= - answer -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)= - answer -1.5784g=1.5g
Density = mass/__________ - answer -volume
Density of an object?
Mass of 2.4019 and volume of 1.40ml
2.4019g/1.40ml= - answer -density = 1.7156g/ml= 1.72g/ml
Density of an object?
Volume of 32ml and a mass of 12.24g
12.24g/32ml - answer -density= 0.3825g/ml=0.38g/ml
Density of an object?
Mass of 78.2g/14.2cm^3 - answer -density= 5.507g/cm= 5.51g/cm^3
, Density of an object?
22.57cm^3/55g - answer -density= 2.43686g/cm^3= 2.4g/cm^3
Density of an object?
85g/35ml - 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)
25.0ml*1cm^3/ml*0.702g= - answer -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 - answer -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= - answer -density= 0.008 g/ml
What is the density in g/cm^3 of an unknow solution containing 2.3kg and 8.0l - 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 -
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? - answer -95 in^3
Calculate the density of 10.4ml 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 - answer -
Convert 12.5g in to kilograms. Enter answer in kg - answer -0.0125
Calculate the density of an object that has a mass of 19.378 and a volume of 15ml.
Enter as g/ml - answer -
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 - answer -
Several samples of a metal weighed and placed into a graduated cylinder filled with
water to measure their volume by water displacement - answer -
Several samples of metal were weighed and placed into the graduated cylinder filled
water to measure their volume by water displacement q - answer -
Dimensional analysis ex.
How many centimeters are there in 3.55m
Quantity given: 3.55m
3.55m * (100cm/1m)= - answer -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= - answer -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)= - answer -1.5784g=1.5g
Density = mass/__________ - answer -volume
Density of an object?
Mass of 2.4019 and volume of 1.40ml
2.4019g/1.40ml= - answer -density = 1.7156g/ml= 1.72g/ml
Density of an object?
Volume of 32ml and a mass of 12.24g
12.24g/32ml - answer -density= 0.3825g/ml=0.38g/ml
Density of an object?
Mass of 78.2g/14.2cm^3 - answer -density= 5.507g/cm= 5.51g/cm^3
, Density of an object?
22.57cm^3/55g - answer -density= 2.43686g/cm^3= 2.4g/cm^3
Density of an object?
85g/35ml - 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)
25.0ml*1cm^3/ml*0.702g= - answer -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 - answer -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= - answer -density= 0.008 g/ml
What is the density in g/cm^3 of an unknow solution containing 2.3kg and 8.0l - 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 -
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? - answer -95 in^3
