WorksheetsScientific Notation and Unit Conversion Worksheet
Total questions: 15
Worksheet time: 37mins
Concentrations of dissolved compounds are usually written as mass per unit volume. Diabetes is usually tested by measuring fasting blood glucose levels. A fasting blood glucose level of 126 mg/dL or higher is a strong indicator for diabetes. Express this concentration in g/mL.
1.26 × 10⁻³ g/mL
1.26 × 10⁻⁷ g/mL
1.26 × 10⁻⁴ g/mL
1.26 × 10⁻⁶ g/mL
A carbon nanotube is a low-density material made of carbon tubes with diameters usually in the nanometer scale. It is a strong material with a high tensile strength and elastic modulus. The highest density carbon nanotubes fabricated have a density of 1.6 g/cm³. Convert this density to kg/m³.
1.6 × 10⁵ kg/m³
1.6 × 10⁴ kg/m³
1.6 × 10³ kg/m³
1.6 × 10² kg/m³
Convert 15 μL to L. Use scientific notation.
1.5 × 10⁻³ L
1.5 × 10⁻⁵ L
1.5 × 10⁻⁴ L
1.5 × 10⁻⁶ L
Determine the nanoseconds in i) 2 s and ii) 19 ms.
i) 2 × 10⁹ ns; ii) 1.9 × 10⁷ ns
i) 2 × 10⁸ ns; ii) 1.9 × 10⁸ ns
i) 2 × 10⁷ ns; ii) 1.9 × 10⁹ ns
i) 2 × 10⁶ ns; ii) 1.9 × 10¹⁰ ns
The emission rate for methane is 297 kg per hr. Express this limit as lb per min with the appropriate number of significant figures.
3.92 lb/min
10.9 lb/min
81.0 lb/min
2.25 lb/min
Solve the problem using the correct number of significant figures: 6.1830 × (14.598 ÷ 3.1)
(a)
Solve the problem using the correct number of significant figures: 39.391 + 21.3
61
60.7
60.69
60.691
The density of one type of concrete block is 2.4 g/cm3. If 1 brick equals 24 m3, what is the weight of 1.2 bricks of this block in lb?
6.6×10^6 lb
6.6×10^-6 lb
1.5×10^-5 lb
1.5×10^5 lb
The amount of gold in an alloy is generally expressed in carats. A bar of 24-carat gold is pure gold (100%). A certain piece of gold jewelry contains only gold (density = 19.3 g/cm³) and platinum (density = 21.4 g/cm³). It has a mass of 11.4 g and a volume of 0.576 cm³. Calculate the purity of the gold jewelry in carats.
18 carat gold
22 carat gold
14 carat gold
12 carat gold
The symbol of Palladium is:
Pb
Pd
Pt
Po
The symbol of arsenic is:
Sb
Pb
As
Ar
The symbol Ra represents:
Radon
Radium
Ronium
Rutherfordium
How many minutes are in a school year, 190 days?
269000 minutes
16156 minutes
11400 minutes
273600 minutes
How many gallons are in a pool that holds 758,000 Liters?
2.00 x 10^5 gallons
200,000. gallons
200,000 gallons
2 gallons
Round 175 to the nearest hundred
170
160
200
180
