Lewis structure of water The Lewis structures, also called Lewis-dot diagrams or electron dot diagrams are pictures that show the bonding between a pair of electrons and the atoms of a molecule. Each dot represents one electron. Two dots side by side represent a lone pair of electrons. To show a bond between atoms, a line representing a pair of shared electrons is placed between the two atoms.
Or, maybe you're wondering just how old the tires are on the motorcycle you just bought. Here's how to tell: Look on the sidewall of the tire for the DOT symbol. Follow the line of text and numbers after the DOT symbol until you reach the end. If the tire was manufactured in the year 2000 or later, the last 4 digits give the age. The last 2 digits give the year and the preceding 2 digits give the week of manufacture.
Answers. Relevance. Rating Newest Oldest. Best Answer: The first number (26 or 700 or 27) indicates the tire and wheel diameter. The second number (1.5, 2.0, 25c, and 1 1/4) refers to the width of the tire as in 1.5 inches; 2.0 inches; 25mm; and 1 1/4 inches; and so on. Don't be confused by the road bike tire designation c as in the size 700 x 25c. The c is just a French tire size, it doesn't stand for a numerical measurement.