Answer:
CH3+
Explanation:
Sp2 hybridization involves the mixing of on s and two p orbitals. This is observed in CH3+. The ion is trigonal planar with a H-C-H bond angle of 120°.
The anion, CH3^- is sp3 hybridized, hence only CH3+ is sp2 hybridized among the options.
The specific heat of silver is calculated as below
Q(heat) = M(mass) xC(specific heat capacity)
Q= 42.8 j/c
M=181 g
C=?
by making C the subject of the formula
C= Q/M
C= 42.8 j/c/181 g =0.236j/g/c
Answer:
7 mL
Explanation:
To prepare a solution by dilution of another one, we can use the equation:
C1V1 = C2V2
where <em>C</em> is the concentration, <em>V</em> is the volume, <em>1</em> is the initial solution, and <em>2</em> the final solution. V represents the total volume. K₂CrO₄ dissolver by:
K₂CrO₄ → 2K⁺ + CrO₄⁻²
So, 1 mol of K₂CrO₄ results in 1 mol of CrO₄⁻², the in a solution of 8.75x10⁻⁴M of CrO₄⁻², it will be 8.75x10⁻⁴M of K₂CrO₄, so the volume of the stock solution will be:
1.25x10⁻³xV1 = 8.75x10⁻⁴x10
V1 = (8.75x10⁻³)/(1.25x10⁻³)
V1 = 7 mL
Explanation:
The molecules move more slowly and their average kinetic energy decreases