7. Radium is a radioactive element that decays into radon gas. Its atomic mass
is 226. How many moles in 500 grams of radium?

Which step in naming unsaturated hydrocarbons is used for alkenes but not alkynes

The boiling point of propanoic acid is higher than that of 1-butanol because: propanoic acid has a higher molecular weight than 1-butanol. propanoic acid is more soluble in water than 1-butanol. propanoic acid is a better hydrogen bond donor than 1-butanol. propanoic acid forms hydrogen bonded dimers and 1-butanol does not. 1-butanol forms hydrogen bonded dimers and propanoic acid does not.

What is i fracture in the crust called when land move up, down or sideways