At a particular temperature the first-order gas-phase reaction n 2o 5→ 2no 2 + (1/2)o 2 has a half-life for the disappearance of dinitrogen pentoxide of 5130 s. suppose 0.450 atm of n 2o 5 is introducted into an evacuated 2.00 l flask. what will be the total gas pressure inside the flask after 3.00 hours? a. 0.969 atm b. 0.105 atm c. 0.795 atm d. 1.14 atm e. 0.864 atm

Iron (3) oxide will decompose in the presence of hydrogen gas and heater to produced iron and digydrogen monoxide white a balanced chemical equation

Which is true of a liquid? it has a definite volume but not a definite mass.it has a definite mass but not a definite volume.it has a definite volume but not a definite shape.it has a definite shape but not a definite volume.

Pegmatites are igneous rocks in which the individual minerals are very large. typically, the minerals are all light-colored quartz, feldspar and muscovite. if you were given a black and white photograph of a pegmatite in a quarry (where the rock has been blasted and broken), what physical properties could you use to identify those three minerals in this hypothetical photo? describe each mineral and the specific diagnostic properties. be specific.