Complete the following equivalent expressions by filling in the blanks.(a) 1 km = ____ m(b) 1m = _____ km(c) 1 mmol = _____ mol(d) 1 mol = _____ mmol

Verified step by step guidance

1. (a) To convert kilometers to meters, use the conversion factor: 1 km = 1000 m.
2. (b) To convert meters to kilometers, use the conversion factor: 1 m = 0.001 km.
3. (c) To convert millimoles to moles, use the conversion factor: 1 mmol = 0.001 mol.
4. (d) To convert moles to millimoles, use the conversion factor: 1 mol = 1000 mmol.

Key Concepts

Metric System

The metric system is a decimal-based system of measurement used globally, which includes units such as meters, kilometers, and grams. It is structured around powers of ten, making conversions between units straightforward. Understanding the relationships between these units is essential for performing calculations in chemistry and other sciences.

Unit Conversion

Unit conversion involves changing a quantity expressed in one unit to another unit without changing its value. This process is crucial in chemistry for ensuring that measurements are consistent and comparable. Familiarity with conversion factors, such as 1 km = 1000 m, allows for accurate calculations and comparisons in scientific contexts.

Mole Concept

The mole is a fundamental unit in chemistry that quantifies the amount of substance. One mole contains approximately 6.022 x 10^23 entities (Avogadro's number), whether they are atoms, molecules, or ions. Understanding the mole and its subdivisions, such as millimoles (mmol), is vital for stoichiometric calculations and understanding chemical reactions.