Answer: Atmosphere
Explanation:
if a scientist wants to predict the weather, they should most directly study Atmosphere.
Answer:
A trigonal pyramid is a tetrahedron with one vacant vertex.
Explanation:
<em>How does a trigonal pyramid differ from a tetrahedron so far as molecular geometry is concerned? </em>
<em>Bond angles in the tetrahedral molecule are 120°, while those for trigonal pyramid are 109.5°.</em> FALSE. Bond angles in the tetrahedral are 109.5°, while those for the trigonal pyramid are slightly lower than 109.5° due to the repulsion of the unshared pair of electrons on the central atom.
<em>A trigonal pyramid is a tetrahedron with two vacant vertex.</em> FALSE.
<em>A trigonal pyramid is a tetrahedron with one vacant vertex.</em> TRUE. This is the geometry of NH₃, in which the central atom is bonded to 3 atoms and has 1 unshared pair of electrons.
<em>Bond angles in the tetrahedral molecule are 109.5°, while those for trigonal pyramid are 120°.</em> FALSE.
<em>A tetrahedron has a square base, while the base of a trigonal pyramid is a triangle.</em> FALSE. Both have a triangular base.
Answer:
Blues
Explanation:
Colors of Rainbow => ROYGBIV
Red Orange Yellow Green Blue Indigo Violet
low energy => => => => => => => => => => high energy
low frequency => => => => => => => => => high frequency
long wavelengths => => => => => => => => short wavelengths
Note: All L's on the Left => low, low, long; other end are opposites.
Answer:
A. Refracted
Explanation:
Incident rays parallel to the optical axis are reflected from the mirror.
C2H2O4 C2HO4- + H+
0.175 - x x x + y
C2HO4- c2o42– + H+
x - y y x + y
K2 = (y) (x +y) / (x-y)
As, y << x
So, K2 = (y) (x) / (x)
K2 = y =6.1 × 10^–5
Hence, concentration of (c2o42–) 6.1 × 10^–5 M