Question

When using the scientific notation system to express large numbers, move the _______ ______
until _____ digit(s) remain(s) to the left, then indicate the number of moves of the decimal point as
the _______ __ ___.

Answer 1

Chemists often work with numbers that are exceedingly large or small. For example, entering the mass in grams of a hydrogen atom into a calculator would require a display with at least 24 decimal places. A system called scientific notation avoids much of the tedium and awkwardness of manipulating numbers with large or small magnitudes. In scientific notation, these numbers are expressed in the form