Ch 4 Calculations Used in Analytical Chemistry

Scientists throughout the world have adopted a standardized system of units known as the

The ____ unit is a non-SI unit of length that is widely used to express the wavelength of very short radiation such as X-rays

SI Base Units of: Mass Length Time Temperature Amount of substance Electric current Luminous intensity

_____ is an invariant measure of the quantity of matter in an object.

_____ is the force of attraction between an object and its surroundings, principally the earth

Relate mass and weight via a formula

The _____ is the SI unit for the amount of a chemical substance. It is always associated with specific microscopic entities such as atoms, molecules, ions, electrons, other particles, or specified groups of such particles as represented by a chemical formula.

The _________ of a substance is the mass in grams of 1 mole of that substance.

The ___________of a solution of a solute species X is the number of moles of that species that is contained in 1 liter of the solution

_______________ is the total number of moles of a solute, regardless of its chemical state, in 1 L of solution.

_________ is the molar concentration of a particular species in a solution

_______ expresses the mass of a substance per unit volume. It is expressed in units of kg/L or alternatively g/mL.

_______ is the ratio of the mass of a substance to the mass of an equal volume of water.

__________ is the quantitative relationship among the amounts of reacting chemical species. T

An __________ gives the simplest whole number ratio of atoms in a chemical compound.

A ______- specifies the number of atoms in a molecule.