At what temperature is the following reaction feasible: HCl(g) + NH3(g) -> NH4Cl(s)? Enthalpy (H) = +946 kJ/ mol
Entropy (S) = +127 J/ K mol

A. 1073.0 K
B. 7.48 K
C. 134.25 K
D. 7448.8 K

What best discribes the relationship between wavelength and frequency in a electromagnetic wave

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.

A650 ml sodium bromine solution has a bromide ion concentration of 0.245 m. what is the mass (g) of sodium bromide in solution? a) 103.b)0.00155.c)16400.d) 16.4.e) 0.159