When dealing with compounds and their names, it helps to know the prefixes of some of the common compounds. For instance,
Mono- = 1
Di- = 2
Tri- = 3
Tetra- = 4
Penta- = 5
Hexa- = 6
And the list goes on.
However we are dealing with Arsenic
Hexabromide:
That means we have 1 Arsenic with 6 Bromides:
Answer:
Triclinic crystal forms. Also known as the rhombohedron system, its shape is three dimensional like a cube, but it has been skewed or inclined to one side making it oblique. All crystal faces are parallel to each other. A rhombohedral crystal has six faces, 12 edges, and 8 vertices.
bascially short answer is 6 faces
The answer to your questions is going to be “Yellow seeds”.
Hope this helps!! :))
Equation a. C3H8(g) + O2(g) → CO2(g) + H2O(g) + 2220 kj
is endothermic. + 2220 kj
Equation b. 2 Na(s) + Cl2(g) → 2 NaCl(s) + 819kJ
is also endothermic since the overall energy change is positive. + 819kJ
The equation c. PCl5(g) + 67kj → PCl3(g) + Cl2(g) is endothermic since it requires anergy to proceed.