Explain the 2 main differences between ionic and covalent bonds and identify if the compound CaF2 will have an ionic or covalent bond and why.

When the pressure that a gas exerts

What is the temperature of one mole of helium gas at stp?

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