Considering radiation weighting factors only, how many times more dangerous are alpha particles than protons? a. 1
b. 2
c. 10
d. 20

Describe the particles of all three phases of matter in the root beer float. (how are the particles arranged and moving? )

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

Explain in detail of the four major scientific developments that spurred the formulation of the plate tectonics theory