What is the temperature of 1.4 moles of helium that occupies a volume of 15 L at pressure of 2 atm

There is an area in idaho named craters of the moon where most of the ground is covered with basalt, adark gray, igneous rock with no visibl crystals. what can you infer about the geographical history of the area?

In which region is the substance in both the solid phase and the liquid phase? 1 2. 3 4 mark this and return save and exit next

What is bromine+calcium iodide--> calcium bromide +iodine balanced