The date below shows the concentration of N2O5 versus time forthe following reaction:
N2O5(g)---> NO3(g) +NO2(g)
Time(s) (N2O5)(M)
0 1.000
25 0.822
50 0.677
75 0.557
100 0.458
125 0.377
150 0.310
175 0.255
200 0.210
Determine the order of the reaction and the value of the rateconstant. Predict the concentration of N2O5 at 250s.

Agas in a balloon at constant pressure has a volume of 160 ml at -125*c. what is its volume at 29.0*c?

An atom's configuration based on its number of electrons ends at 3p4. another atom has seven more electrons. starting at 3p, what is the remaining configuration? 3p63d34s2 3p43d54s2 3p64s23d3 3p44s23d

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.