Which statement accurately describes the chemical symbol of an element? The chemical symbol is always a single letter.
The chemical symbol always starts with the same letter as the name of the element.
The chemical symbol always begins with a capital letter.
The chemical symbol can be shared by more than one element.

The speed of light is around 6.706×10^8 miles per hour. what is the speed of light in units of miles per minute?

What forms when chemical reactions combine pollution with sunlight?

The following reaction shows sodium carbonate reacting with calcium hydroxide. na2co3 + ca(oh)2 → naoh + caco3 how many grams of naoh are produced from 20.0 grams of na2co3? (molar mass of na = 22.989 g/mol, c = 12.01 g/mol, o = 15.999 g/mol, ca = 40.078 g/mol, h = 1.008 g/mol) 12.2 grams 15.1 grams 24.4 grams 30.2 grams