Density
What is the formula for density?
Density = Mass / Volume
How many significant figures are in the number 0.00340?
3 significant figures
The conversion factor that converts 12 m to cm is:
What does the prefix “kilo-” mean?
1000 (103)
Write 45,000 in scientific notation.
4.5 × 10⁴
A block has a mass of 20 g and a volume of 4 cm³. What is its density?
5 g/cm³
Round 45.678 to three significant figures.
45.7
The number of conversion factors necessary to convert 500 g/s to kg/m is
What is two conversion factors
What is the prefix for 10⁻⁶?
micro- (µ)
Write 0.00082 in scientific notation.
8.2 × 10⁻⁴
Why does ice float on water in terms of density?
Ice is less dense than liquid water.
Zeros after a decimal point are significant when:
What is when there is also a significant figure
Give the conversion factor and answer for converting 2.5 hours to seconds
What are 3600 seconds/1hr and 9000 seconds
Convert 3.5 km to meters.
3500 m
Multiply (3 × 10³) by (2 × 10⁴). Express in scientific notation.
6 × 10⁷
A liquid has a density of 5 g/mL. What is the volume of 10g of this liquid?
2 ml
Multiply 3.45 by 2.1. Report the answer with correct sig figs.
7.2
A car travels 60 km/h. Convert this speed to m/s.
16.7 m/s
Express 0.0045 L in millilitres.
4.5 mL
Divide (6.0 × 10⁻³) by (2.0 × 10²). Express in scientific notation.
3.0 × 10⁻⁵
A liquid has a density of 1.2 g/mL. What is the mass of 250 mL of this liquid? What is the conversion factor
300 g
1.2g/1 ml
Add 12.11, 18.0, and 1.013. Report the answer with correct sig figs.
31.1
Convert 2.50 g/cm³ to kg/m³.
2500 kg/m³
A sample weighs 2.5 × 10⁻⁹ g. Express this in nanograms.
2.5 ng
A wavelength is 4.56 × 10⁻⁷ m. Convert this to micrometres using scientific notation.
0.456 µm (4.56*10^-1)