How many moles of tungsten are in 415 grams of tungsten?

The reaction q+r2=r2q is found to be first order in r2 and

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

All of the following are part of the biosphere except