(i) The element Francium is extremely rare and very little is known about its chemical and physical properties Use the following data to estimate its density and ionization energy.
Density (g/cm3)
0.86 of K
1.53 of Rb
1.87 of Cs
Ionization energy (KJ/mol
419 of K
403 of Rb
375 of Cs

Can smoke be transformed into liquid or used as energy or both?

Pbco3 –> pbo+ co2. how many liters of carbon dioxide gas is produced from the decomposition of 32 grams of lead (ll) carbonate?

Match the following vocabulary terms to their definitions. 1. amount of energy required to change 1 gram of material from the solid to the liquid state at its melting point 2. a measure of the kinetic energy of the particles of a substance 3. the amount of heat energy required to raise the temperature of 1 gram of liquid water from 14.5°c to 15.5°c 4. amount of energy required to change 1 gram of material from the liquid to the gaseous state at its boiling point 5. the amount of energy required to change 1 gram of a substance 1°c a. temperature b. latent heat of vaporization c. latent heat of fusion d. calorie e. specific heat