In the following equation how many atoms are in the reactants?
216 + Ca(OH) mm - CaCl + 2 O

If the root word engage means “to connect with something,” what does the word disengage mean in the following sentence? he disengaged the gears by stepping on the clutch pedal.a.added more engine powerb.activated a connection to the pedalc.stalled the engined.released a connection to the pedal

Which type of substance ionizes partially and gives off hydrogen ions when dissolved in water? a. strong acid b. strong base c. weak acid d. weak base

The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.