lithium has two isotopes with mass number 6 and 7. if the relative atomic mass of lithium is 6.94, determine the percentage abundance of each isotope.

After cloud droplets form, what must happen to them for precipitation to occur?

Start an single atom tab. observe the decay of polonium-211. after each decay, press the reset nucleus button to watch the process again. write a description of alpha decay for po-211

Which statement about hf is true? it is zero for any compound in its standard state. it is positive when the bonds of the product store more energy than those of the reactants. it is negative when a compound forms from elements in their standard states. it is zero for any element that is in the liquid state.