(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

Which mathematical relationship should you us to convert moles of a substance into grams

Which statements are true concerning mineral formation? check all that apply. the slower the cooling, the larger the crystals. the faster the cooling, the smaller the crystals. crystals formed from magma are smaller than crystals formed from lava. minerals can only form in solutions when the solution is heated deep underground. when a solution cools, elements and compounds leave the solution and crystallize as minerals. minerals formed from hot water solutions can form narrow channels in the surrounding rock.

1) describe the physical layout of the ocean floor ? 2) explain how the dumbo octopus swims differently than other octopus species and why this would be an advantage in the aphonic zone . 3) why are the types of organisms that live at each underwater hot vent so dramatically different ?