Which arrangement of the following Period 5 elements, from left to right, orders them with respect to their atomic size, from smallest to largest?

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

How will the volume of a gas be affected if the pressure is tripled, but the temperature remains the same?

What is the approximate vapor pressure when the gas condenses at 70 degrees celsius