Sig Figs
Sig Fig Operations
Scientific Notation
Density
Dimensional Analysis
100
How many sig figs are in the following number?
5600000
2 sig figs
100
Calculate the following sum and round to the correct number of sig figs:
8.3+3.26=
8.3+3.26=11.6 (1 sig fig after the decimal)
100
The speed of light is approximately 300,000,000 m/s.
Convert the speed of light into scientific notation.
3 x 108 m/s
100
A graduated cylinder contains 100.6mL of water. A scientist wants to determine the volume of a lump of gold. When he drops the lump of gold into the water, the water level rises to 178.6mL. What is the lump of gold's volume?
78.0mL
100
A Honda Civic Sport weighs 2,995 lbs. If 1kg = 2.2lbs, how much is the Honda Civic's equivalent weight in kilograms?
Note: you must show your work with the dimensional anaysis method to receive points!
(2995lbs)*(1kg)/(2.2lbs)=1361.36lbs=1361lbs
200
How many sig figs are in the following number?
.000890
3 sig figs
200
Round the following density calculation to the appropriate number of sig figs:
density of mercury= (816.5 g )/(60.2 cm^3)=
13.6 g/cm3
200
Convert .000000800 into scientific notation.
8.00 x 10-7
200
What is the density of a liquid with a mass of 60.0g and a volume of 27.8mL?
Note: your answer must contain the appropriate units and number of sig figs to receive full credit.
density = (60.0g)/(27.8mL)=2.16(g)/(mL)
200
The state of Florida has 663 miles of beaches.
If 1 mile = 1.6 kilometers and 1 kilometer = 1000 meters, how many meters long are Florida's beaches?
Note: you must show your work with the dimensional anaysis method to receive points!
663mi * (1.6km) / (1mi) * (1000m)/(1km)=1060800m=1060000m
300
How many sig figs are in the following number?
50700.
5 sig figs
300
Solve the following problem, rounding your final answer to the correct number of sig figs:
8.00 x 13.2 =
106
300
Convert .00000963 into scientific notation.
9.63 x 10-6
300
What is the mass of an unknown object with a density of 6.00g/cm3 and a volume of 9.0cm3?
Note: your answer must contain the appropriate number of units and sig figs to receive full credit
(6.00 g/cm3) * (9.0cm3)=54g
300
A traveller goes to the bank to exchange 150. euros for US dollars The bank says that they only have quarters. How many quarters will he receive in exchange for his 150. euros? (1 euro = 1.13 USD, 1 USD = 4 quarters)
Note: you must show your work with the dimensional anaysis method to receive points!
150 euros * (1.13USD)/(1 euro) * (4 quarters)/(1 USD) = 678 quarters
400
How many sig figs are in the following number?
0.9080060
7 sig figs
400
Calculate the following difference and round your answer to the appropriate number of significant figures:
800.3cm -2.621cm =
Note: to receive full credit, you must include the appropriate units!
797.7cm
400
Convert 98030000 into scientific notation.
9.803 x 107
400
If mixed together, which of the three liquids will form the top layer in a jar?
densities:
diet coke = .997 g/mL
benzene = .874 g/mL
water = 1.00 g/mL
benzene = .874 g/mL
400
Convert 2.3 Å (Angstrom) to meters.
Note (1x1010Å = 1 meter)
Note: you must show your work with the dimensional anaysis method to receive points!
2.3A *(1 m)/(1x10^10)=2.3x10^-10 m
500
Record the measurement of the white stick below using the proper units and number of sig figs.
2.2cm-2.5cm
500
Calculate the following operation and round to the correct number of sig figs:
2.0cm x 11.6cm
Note: your answer must contain the appropriate units in order to be awarded full points!
23cm2
500
Convert .0003 into scientific notation.
3 x 10-4
500
What is the volume of a an unknown object with a density of 7.0g/mL and a mass of 186g?
Note: your answer must contain the appropriate units and sig figs to receive full credit.
27mL
500
Convert 8 years to seconds.
8 years * (365 days)/ (1year) *(24 hours)/(1 day) * (60min)/(1 hour) * (60 sec)/(1 min)=252,288,000 sec